SPM Biology MRSM 2022 Paper 2 Solved Walkthrough | Wailing Biology

[00:00:08]hello guys hello everybody hello yo yo so I'm glad that you guys made it so um anyway before we start the class remember to download the paper at the description box um the class will be conducted in English so if you have anything that you don't understand in English I can try to use Mandarin to explain but it will be in English Okay because you know I have students who are banana who doesn't understand Mandarin so I have to be in English but if you don't understand my English maybe I can try to explain in Mandarin as well okay so we will wait for another maybe two more minutes to start the class so meanwhile you can just you know just print the paper out and then you just get ready I know that if you are from PTC you just ended your physics class you can take a two minutes break to go to the toilet in too many times you will start the class okay hopefully that you guys done well for your sergera bnbi and moral my student told me that the the surgery paper was a bit hard I don't know if you feel the same but that's what that's what they say like okay maybe it's a question that you don't you usually do it in your school maybe okay hello Mr Liang meanwhile let me tell you Mr lamji has cast tonight as well uh if you need help for Max he will be doing and YouTube live at 9 30 at his YouTube channel so if you need Max Vision you can go to language mathematics 9 30. okay language is having extra class two if Eugene have extra class I can tell okay I don't think people who think bio will take a size now okay but yeah langje came to my channel to promote his channel okay so 9 30 tonight I don't know what people he's doing but you can try to go to China to see maybe you need help for Max Lange is my next Max teacher also so conclusion is very old language is my teacher that helped me to score a in my Max okay okay anyway let's start the class then hopefully you have your paper with you already we will do mrsm 20 22 this year um this question the question in mrsm has a lot of chapters that you have to focus in this year SPM okay now the first question usually in your paper paper to first question is either from your form 4 chapter 2 or form four chapter three or form four chapter four so usually is this law okay so if you want to if you want to focus on the question one which is only six months you can try to read the form four chapter two three and four okay now one shows the paramecium species that live in the fresh water park this is form four chapter two question okay now paramecium species is a question that it came out quite uh quite a quite a few in this year State paper so if you never study about paramecium species before maybe you have to focus this year so for permission species they will have a fixed shape and the outer layer we will do labeling first in biology the first thing that you have to know is the labor part okay the label over here this one is actually and then we have nucleus in every cell but paramecium species is very special because they have two nucleus the two nucleus one is bigger one is smaller the bigger nucleus is known as macronucleus macronucleus the smaller one this is the smaller one is called micronucleus okay so K is the same as a sunlight structure right the one that looks like sun in paramecium species is always the contractile record in amoeba species there's no Starship for contractile backwards okay now for K we can write again it's called contractile back quote okay it's called contractile vehicle so L as a label is the Celia so it can be labeled again this is the Celia okay now as you can see there's another thing inside as well can you see this this okay this is actually the food vacuum in every species paramecium species or amoeba species they will have food backwards how do we differentiate whether they are full vacuum or they are contractile background in amoeba species full Echo has food inside can you see there's food inside means that they will be full back okay we're gonna revise a little bit on the football because if the question is uh and my butt species they will ask you about phagocytosis it means that how does the species consume the food it's called phagocytosis to digest the food the food vacuole will fuse with the thing but my preference is to write like zoza because lysosome secret lysosome it's easier to remember teacher why physics and value class at the same time not a different time I read the physics class to end only I start the extra class right okay I count the time properly at age 12 30 you end your physics 12 30 you start your bio Club okay now that Middle East we're gonna look at name K and L we have name it already K is a contractor of equal L it's a Celia okay now we usually we'll ask you what is the function of the labor part now they ask you the function of l l Celia okay what is the function of Celia cilia usually for I mean for paramecium species to move and for them to end guard food as well so we have to call it as a rhythmic contraction or rhythmic rotation in amoeba impairment species you can write they were beating of Celia also okay meeting of cilia for weapon also correct so for L you can write beating of Celia to enable Movement by the way if you think that I speak very fast you can always wind back to wash the thing okay if you think they're very fast like because I was just you know follow my own speed okay explain what will happen to paramecium species when structure K fails to function okay now structure K is contractile vehicle what is the function of contractile backward contractile vacuole it's to carry out a process called osmo regulation okay what does osmoregulation means when the terms ends with ion it means this is a process what does osmore means or small means water regulation means what regulation means to regulate that is to control water balance in the Cell It's called osmo regulation physics class until one hour because he told me until 12 30 yesterday means he lied to me okay you told me I dropped the device you can always wash back the replay okay now uh since we know that paramecium species contractor vacuole is a control of small regulation right now the contractor record cannot function if they cannot function what will happen next is they will burst okay no matter whether in hypertonic or hypotonic they will burst because amoeba species and paramecium species they usually live in um normal water which is their waterfall your pond area you will find paramecium species so over here we're gonna write that um osmo regulation cannot occur and then contractile vacuole cannot contract to expel excess water out of cell causes the cell to burst causes the cell to burst so how does it works when when there is a contractor record when water diffuses into the contractile vehicle and when we reach to the maximum size the contractor backward they will contract and expel water out if they don't contract and expel water out the cell will die okay so this is how does the contractile backward works next they State the type of reproduction for paramecium species when the environmental is not suitable not suitable means what not suitable it means they are referring to dry or there's no food or acidic okay it's called not suitable or no matter whether it's a paramecium species or amoeba species the not suitable refers to there's no water because as I mentioned it leaves in water right when there's no food when there's no oxygen and when the surrounding is acidic it's called it's not suitable type of reproduction we have two type we have sexual and asexual but for paramecium species they can carry out both in not suitable situation they will carry out sexual reproduction it is known as a conjugation conjugation yeah conjugation conjugation means what they will exchange the nucleus between the perimeter species and then they will have two babies out so this is under sexual reproduction asexual it will be binary fission so binary fission it means one into two is called binary fish now so you have to know type of reproduction is sexual or asexual amoeba species they only have binary fission or forming small amoeba species is one okay paramecium species they have two conjugate station or binary fission either one okay now that made this question okay if you have any question that you want to ask you can write me down but even though that the YouTube is delayed so maybe I'll only see your question after 30 seconds or one minute later but you can still ask me any question now okay now question two this is under form four chapter eight okay this is under form four chapter eight uh it's a chapter where people don't like the chapter the most when it comes to animals because this chapter we have animals we also have human Okay animal and also human the game two shows that respiratory structure of frog and they ask you what is X obviously this one shows a skin right so if you don't know the scientific word of skin you can write skin okay but the scientific word of skin it is known as cuteness okay if I get over here like this is skin in scientific what we call this as cuteness you actually learn it in your textbook as well okay now um frog can use two area to carry our gases Exchange number one is true skin number two is through the lung this is the lung lung has another scientific name as well it is known as bako pharyngeal I don't know if you remember okay it's called bako forangjo it's known as buckle for ranjo so if you don't know an exam if you really don't remember at all you can write lung you can write skin because it's still correct in English but in scientific word it's called cuteness and buccal pharynger it's the one that carries out gases exchange explain one adaptation of structure X adaptation means what adaptation means characteristic if you want to write the characteristic of frog fish human or even insects you can write the same characteristic if you don't know that guys try to write this easiest one which is one Celtic you know everybody know one Celtic just like one Celtic if you don't know one Celtic you can write moisture face if you don't know moisturface you can write increased surface area numerous in number so there must be something that you can write if you don't know just write one Celtic remember this is an explanation when you write one Celtic you have to explain your answer usually one Celtic explanation comes with a rapidly easily or efficiently if you want to write one Celtic but you only left two weeks out guys if you don't know just choose one cell take okay if you don't know anything for biology just write one cell take so this one you can write a one cell tick or you can write thin walls or Canada okay whichever you prefer you can say highly permeable to allow recipe guesses to diffuse easily so as I mentioned if you don't write easily what you can write you can write rapidly or you can write effectively also can okay whichever whichever you prefer so choose the easiest one once I'll take if you want to write numerous in number you can say increase surface area to allow gases exchange to happens more efficiently also can so remember to choose the word to write one Celtic you need to write easily or rapidly okay okay next uh during the drought season the Frog are exposed to extreme temperature drop it means dry yeah this one it means very dry there's no water explain how this situation affects the gases exchange at structure X because your the skin of a frog I don't know if you touched before it's moist because there's a lot of mucus that they trap gases right now there is no that is very dry so when it's very dry they will start to use their lung to carry out gases exchange because they need to survive through the season right if the skin is too dry maybe either they will die or they will use their lungs to carry out gases exchange so the gases exchange 2x it will decrease because it's not moist anymore you cannot trap gas anymore there's no gases Exchange so what you can write is you can see that the skin become dry and then you can see the gases cannot dissolve into skin gases Exchange cannot occur gases exchange cannot occur okay so this is question two okay anyone has questions you can ask me if it's not that I'm going to continue or just continue guys okay or just continue okay now question three sheep can have babies color of wool the color of wood is controlled by a pair of allows Megan 3.1 shows how two different colors of wood were inhabited white wool is dominant okay this is under form five chapter 11. okay this form five chapter 11.

[00:14:43]so right now you can see that they say that what is a dominant okay what is a dominant when it comes to dominant you have to know it will be capital letter if it's a recessive it has to be a small letter okay and this is a capital letter right now white is a dominant black is a recessive okay now black we know that it's too small G so confirm that this one has to be too small G because to show they are recessive it has to be too small letter it has to be too small G and then obviously this one it has to be too small G right because it's black right now we have to think about it whether this p is a Hector or homo hectar or homo means what Hector means different Big G small G homo means Big G Big G so which one is more possible the answer is Big G small G okay why is it big G smart G because you can see that this one is black to have a black babies you need to have one small G from the white one small G from the black only you will form into two small G if this is a capital G G right this one are confirmed some other sheet one not P1 okay a same as human guys the logic is same as human so it has to be Big G's nor G only that this ship over here is Big G small G this is also a big g a small G because once you have one dominant they will show the dominant characteristic because dominant is the king so when you have King and then we'll show the king characteristic okay so this is Big G small Gila okay now we have the answer for p and Q already remember chapter 11 is also one of the important chapter that you have to know for this exam as well if you don't really understand what is chapter 11 I have a video that explains chapter 11 I mean it's I think for the 43 minutes something like that you can go and watch it then you can understand what is the dominant what is the recessive uh something like that but you have to train it okay this chapter next one state Mendel's law of segregation okay Mendel has too long first law and second law first law is called law of segregation Second Law is called Law of Independent Assortment what does segregation means segregation means separation when you want to form a gamete it will carry out law of segregation which is under meiosis okay give you an example yeah we have p and Q just now right so p is Big G small G Q is small G small G this is parents genotype they want to form into gamete okay this is parent genotype okay they will form into gamete so to form into gamete they need to have law of segregation so how do they want to separate the SE one they will have big G this one will have small G this is small G this is small G this one is what we call as the law of segregation it's a Savage it's a separation which we call this as meiosis law of segregation so the allele will be separated they will only carry one allowed so when we write in sentence we can write that members of each pair of allele separate during formation of gamete by mayor sis and then only want of the allele hair is inherited in a single gamete single gamete so one of the way for you to remember better is you can just remember as first law law of segregation it involved only one alphabet which is G okay if it's a second law they would involve two alphabets such as g g t t okay that would be second law Second Law is called independent assortment they will have different arrangement in meta phase one so it's called independent assignment so when you see only one alphabet this one is meiosis or this is a first law when you see two alphabet ggt that that would be second law so it's one of the way for you to remember whether it's first law second Lala okay now done with this really we're gonna move to the next question um this one is say the inhabitants of feather color for Andalusian chicken is controlled by co-dominant allowed what does co-dominance mean co-dominant it means both are dominant it's called codominant in human what are codominant blood group is a codominant but for chicken it can be anything not because they give you a chicken right so for human co-dominant it can only be i a i b which is blood group A and B both are dominant it's called codominant the allele for white feather is a w and the allele for black feather is a b okay this is white but the W refers to White the B refers to black light okay the m3.2 shows the parent of Anda Lucian chicken with white feather and Andalusian chicken with black feather okay so they will have a combination over here as you can see white and black they form into black white right I mean this is a mix right okay it's a mix so quite obvious that we have no Hector over here it can only be dominant because they didn't say that they can be Hector or homo right so it will assume that it's dominant okay which is a hormone so this one will be a w a w this is a b a b a mixture of white and black because also a white and black right you have to write a w a b okay A W A B so we will have to form this thing over here by writing it based on 3.2 determine the parents genotype gamete and F1 with white feather parents even if a white feather parents and a black feather parents will breed together so what it's a w a w this one is a b a b okay black white r and then the gamete just now we say right to form gamete they will undergo a process called meiosis so this is a w if it's the same we can only choose to write one time is enough okay if it's the same just write one time this one is the same thing as well a b this process is known as meiosis okay if you need to write for your AC question two for inheritance you have to write meiosis okay and then your genotype will be a w a b a w a b so this is the answer so it's not very hard just put them together then you will have your answer with you already so this a w a b so for chapter 11 you have to know about yourself okay next question four 4.1 shows a flower 4.2 shows the formation of pollen grain this is under form five chapter six okay I don't know how much you guys spend time studying form five chapter six but it's under plants reproduction you have to know plants reproduction as well okay the answer label M at the structure that produces pollen grain that produces pollen grape feature black white then why not a b a w um actually when we write the answer we have to follow the name but when you form this situation then you have to follow this one but actually if you want to follow the better one you always refers to the black white okay so the better answer is actually a b a w but the answer given in this state paper is awab but the truth is you have to follow black regular the black light is abawulla because the answer given is a w a b before this state paper but generally you have to understand you have to write the name first which is black first and then white but if you formed by this then it's white black law okay now back to this again yeah uh what is that okay now we're gonna label this thing for the plants so in this diagram we have male and female because plant it can be meal it can be milk it can be female over here okay we're gonna label male part first this meal part this entire thing here is known as statement s-t-a-m-e-n the top part here it is known as enter the bottom part is called filament okay female part this entire thing is called couple or pistol okay whichever one you want to write couple also can pistol also can and then the top part is called stigma okay you are here okay next we have Style this one we have ovary overview once you graduate already you still want to see my my live class okay next we will talk about the function of it okay now we have enter what is the function of enter enter is the prettiest pollen grain this is to produce so statement is the entire thing filament is the whole enter this is whole enter and then stigma is sticky yeah stigma is sticky style is a tube where the pollen grain will move downwards ovary contains of OVU okay next uh they ask you to label M at the structure that produces pollen grain right so it can be this these or this okay whichever entered also can biology so it's either one of the cat these these or these also can whichever light you can label as M remember to label M don't label x y z guys we always follow the question if the question one M you just write I don't write X Y is that you don't choose your favorite alphabet to write name m m is enter so we have mentioned that m is enter so you can write by yourself m is enter okay based on 4.2 explain the formation of pollen grain now this question is very kind because they give you a diagram so from this diagram you can explain your answer what you have to know is you just have to fill in what is the process that they carry out and then what do they form into because they actually give you micro spawn other cell tetrack and pollen grain right okay now microspore Mother cell Every Mother cell no matter whether it's male or female plants Every Mother cell it has to be 2N which is dipole in number okay Every Mother cell it has to be 2X so before they form into this micro small Mother cell they come from Poland Sac actually they come from Poland side when you cut the answer into half they will have four poles inside every pollen said it contains of many microspone other cell okay you can refer back to your if you have any book so they will look like a butterfly for Poland set they have four in one enter so this polar Mother cell they will undergo meiosis one and also meiosis too which is a complete meiosis they will form into a Tetra so over here the process they carry out is meiosis so since once they carry out meiosis from 2N it will form into n 2 and they will form into n and then as you can see from this tetrack tetrate actually means four so from this one thing when therefore they will separate to form into four pollen grains so the other side we have a separation this is a separation separation or you can say develop also can either you want to say separate or they want to develop into a pollen grain also can in pollen grains they will have two nucleus these two nucleus they have different functions I mean they have different function they have different name now okay uh usually they don't ask you to label but you have to know there is two names because the two nucleus okay this one is the generative nucleus the other one is a tube nucleus okay what is the function of these two nucleus because when they carry out double fertilization the tube nucleus has to go into the cell first in the stigma to the cell first the two nucleus will start to form a potential generative nucleus it contains of two mil gamete contents of two meal gamete that's why it's called double fertilization it will fertilize two times it's called double fertilization so remember in pollen grains they have two nucleus generative nucleus and Tube nucleus generative nucleus they have two male gametes they will undergo mitosis to form into two mil gamete and then they will carry out double fertilization okay now we have to form into a sentence guys explain the formation since we say right if you know what you have to write in with the function literally you can form a sentence so when whenever you see biologic question don't give up okay don't leave blank because once you leave blank your answer confirm is wrong but you try to write something maybe you write a Microsoft model cell okay you see four you remember it's mayonce is a form into meiosis you get one Mark already guys just have to know the process of it okay try to write anything that you know for biology don't leave it blank try every chances don't leave it blank once you leave it blank you have no answer means you have no marks out obviously so you can just write my crossbar Mother cell undergo meiosis to form four haploid micros ball cell next you can see each cell in Tech shot develop into Poland green that consists of two nucleus which are tube nucleus and generative nucleus tube nucleus and generative nucleus okay so this is how they form a prolonged grid if you didn't write what is the name of the nucleus it's totally fine as well because it's only two marks you can see that each cell in Tetra developed into pollen grain You full stop over there your answer is still too much okay so remember try to write anything that you know in the question don't leave it blank okay next time to look at c a flowering plant is infected by Fungus that damage the whole stigma okay now stigma is sticky which we have mentioned just now stigma is sticky in your opinion can these plants produce seed explain your answer okay obviously can't cannot okay the answer is cannot because when they are infected by Fungus your stigma is damaged your pollen grain cannot fall onto the stigma they cannot stick to it right once they cannot stick to it there will be no double fertilization no double fertilization means there will be no seed because there will be no double fertilization everything will not happen actually okay when you see infected damage malfunction they think it will be a negative answer because you cannot happen with the process right so what you have to explain when you see this kind of pressure infected by what malfunction your answer is the function you in front you act unable cannot so your answer it will be like that when it's negative statement okay hope can come out double fertilization I'll be a happy boy if that come out in SPM double fertilization came out uh in I think three years ago for a essay question two years ago SPM but chances is still there okay so we have to say it cannot Farm okay your answer needs to be a negative statement means cannot unable whatever cannot happen okay sit cannot farm this is your first Mark second one you can say Poland green cannot be transfer to stigma germination unable to occurs doubles fertilization cannot carry out okay if you want to explain in detail you can see that the double fertilization okay the double fertilization has what formation okay cannot carry out where trip light and those sperm tissue and diploid zygote cannot form as you can see when I say that your question is a negative statement your answer needs to have cannot cannot cannot cannot Solitaire Valley is the function itself you add cannot in the middle or in front or at the back whichever lock okay as long as your show cannot okay cannot unable so can hi Jackson when you bring to me okay okay so what is tripod endosperm tissue tripod endosperm tissue it actually form from your male nucleus and your female nucleus okay so it's actually two M plus n they will form into 3M which is a tripod nucleus dipluc zygote is actually n plus and so one of the male gametes will fertilize with the egg cell they will form into a diplox zygote the two n here refers to Polar nuclei the N refers to male gamete so two polar nuclei and one meal gamete they will form into three n Three N is tripod okay male nuclei and XL form into 2N 2N is diploid zygon okay if you don't know double fertilization you can go through a bit but actually we have explained um 30 to 40 percent already actually so second point or third point I choose one since it's only three marks second point or third point no actually because in this case right when pollen grain cannot be transferred to stigma equals to germination so I mean of course you can choose one but if you want to put it into one sentence also Cana Poland green cannot transfer to stigma hence germination cannot occurs because pollen gain into stigma is called germination so whichever you prefer so does the sequence of it is pollination germination double fertilization pollen grain onto stigma it's pollination yeah see germinating just now it's pollination okay it's pollination and then next germination third is double fertilization so it comes in a sequence if you want to carry out double fertilization so it's pollination germination double fertilization we have three in sequence pollination germination double fertilization okay okay now damn it is we're gonna look at the next question question five uh this is a mangrove swamp Mangrove swarm is under form four form five chapter nine okay 5.1 shows a type of tree that can be found in Mangrove some ecosystem So based on 5.1 name the type of root system shown this one here it's it's a very significant thing in Mangrove area we call this as prop roots okay we call this as prop Roots okay there are four different three different routes in Mangrove system I'm not too sure about it remember there are four different species in Mangrove ecosystem the four species comes in a sequence the sequence of four species is known as asrb you can be remembered as a sexy Red Bull in sequence but of course please don't write your sexy rainbow guys in biology it's called every senior species son ratio species rhizophror species okay so we have Pioneer and successor species Pioneer is the one that started the process is called pioneer species nvcinia and sonar Asia is the pioneer species rhizophora and Bulgaria is the successor successor means that they take over we call this successor yeah every single species and rhizo are in solar racial species they will have the same root the root is known as cable root it's called long extensive cable root means they are belong so that because they are near to the seaside yeah when they have long cable root they don't collapse it's called cable router rhizophror species they have prop roots so the one that you see from this diagram is the rhizo for our species Bulgaria species they have butcher's root remember it's buttressed not Butler star guys it's butcher's root every senior and Son of Asia species cable root is to prevent them from collapsing they also have another type of root the other type of root we call this as Yuma truffles Yuma tafos Yuma tafos is a breeding root so cable root prop root buttress root is to Anchor themselves so that they don't collapse Yuma tapos is the route to carry out a gases exchange during high tide it's a breeding route for Yuma tacos okay Yuma tapos is a breeding root okay to breathe it's called Yuma tapos in this direction we cannot see Yuma Falls okay next mango trees live in a habitat where the area is exposed to high light intensity based on statement above explain the adaptation of Mangrove tree to continue its survival in the habitat okay the question has this mean word they say highlight intensity so we cannot say what butcher's root because it doesn't make sense nothing to do with highlight intensity so what we can say is remember adaptation means characteristic we can write we have thick cuticle on the leaf the leaf has thick cuticle they can prevent excess water loss or you can say they have sunken some attacking what is the sunken samata it means that the stomata is deep inside it's called sunken because usually the leaf the leaf surface imagine this is this is the leave right okay they have a lot of layer the stomata is over here usually that I cannot draw very well guys okay but imagine like something like that this is the area of stomata usually but when it comes to Sunken samata it's deep inside it means that it will be like that over here we have stomata so this is the hole over here so sunken stomata is deep inside we call this a sunken samata so when it's deep inside to the cell they will have lesser water loss okay either you want to write take you thicker you if you want to write sunken samata also can okay whichever you prefer like remember explanation you need to explain your answer so you can say Leaf yeah leaves have take cuticle they are able to reduce excess water loss so the thick cuticle as I mentioned or you can make sunken stomata means their inside is okay the other one you can say the leaf is thicker we call this as um uh what do you call succulent leaves okay succulent means that they can store water it's called succulent not only mango tree are succulent even Cactus is also succulent aloe vera is also succulent succulent means that they have a lot of area where can store water okay in Mandarin we call this as two Roots okay Cactus aloe vera the lip or the stem is thick they can store water it's called circular so you can say they have succulent yeah s-u-c-c-u-r-l-e-n-t succulent leaf to store water it can store water succulent can store water okay next we will move to the next question actually because the question says highlight intensity right it's just to prevent excess water loss if it's not Mangrove tree the question asks about Cactus or aloe vera we will use the same answer as well if it's Cactus or aloe vera we can share the same answer unless you want to just based on the mango tree you can have other characteristic where they have BB party seeds Vivi parity means that the seeds grow on the parent plant and then they will drop when they grow older so that it will it will not be washed away by the water it's called Vivi parity there's a lot of characteristic in mango tree okay next 5.2 shows the Zone in the mangrove ecosystem oh this diagram we have we have human truffles over here we have butter fruit as well they say differentiate the Zone Y and zag write your answer in the space provided okay now we have three different Zone over here the first Zone they show you is near to the seaside we call it as coastal zone it's near to the seaside Y is the middle one as you can see it's obviously the middle one right so why we call this as middle Zone Y is called middle Zone okay and then zag is at the land right we call this as Inland Zone because there's less water as you can see this is the water high high low thyroid so as you can see they don't really get a lot of water so we call this as Inland Zone in the land it's called Inland Zona middle is Middle Zona so quite obvious that what you can understand over here so we have said that we have four different species right the coastal zone we have every senior and sonar Asia why is rhizophora Zac is bugeras this is okay when you spell bouguerra species you need to B is capital letter r is capital letter when they spell Bulgaria species you know when you pronounce correctly you will Spell correctly remember to pronounce as b-i-u-ra it's called species please don't spell wrongly a lot of time when they spell the word they will spell the i and e the other way around but remember to pronounce it properly you will spell it properly it's called era species foreign and human purpose actually they have the cable root at the site as well there's many cable root like okay this is what this will be the cable a little bit ugly but yeah and then this one is the prop road that we see just now this is the butcher's route hello Mr Wei and okay so name the dominant species okay we have say the species already in the middle Zone the species is called rhizo for our species arizo for our species and then Zone zank we have as I mentioned if you pronounce properly you will spell properly the r has to be capital letter the B has to be capital letter s p e to have dot actually in form five when you learn a scientific word you need to underline your scientific name okay which you underline separately this one you underline this one you underline this one you underline this one you underline because we learn it in Biola we say that when we write any scientific word we have to underline separately the genus has to be capital letter the species has to be small letter okay this is what we learned in biology remember to underline if you write any species same as paramecium species and amoeba species if a teacher wants to deduct Your Mark they can deduct your mark from there so remember to underline separately okay next uh oil spill tractors vast area of Mangrove and coral brief in Brazil hybrid of a pollution stretch across 2400 kilometer of Coastline with sign scientists fearing contamination of food chain hundreds of kilometers of Mangrove and coral reefs as well as the humpback whales breeding grounds are under trace of from an oil spill that has been polluted for more than 2 400 kilometer from the Brazil north eastern coast in last two months okay so the the questions the statement here says oil spill is the one that threatened the food chain ice Bill okay ice field is the key if you don't understand what is writing on top or the bottom doesn't matter I spill guys always feel when there's a lot of eye on the area it causes a tread it's called oil spill threatenser now explain how the situation described in artistic articles affects this is a fact sorry type running effects the respiration rate of Mangrove tree roots in the coastal zone as shown in 5.2 okay now respiration rate we have mentioned in coastal zone what do we have we have Yuma Taco ship they will carry out gases exchanged during a high tide right now when there is a lot of oil all of the Yuma Turtles it will be blocked we have to understand how do they carry out gases exchange leave they have stomata they can carry out gases exchange for stem and Roots they will have a thing called lentils lantisos is the pot at the same rule okay they are able to carry out gas exchange right now there is oil the oil they will block at the land thistles at the stem and also at the root there will be no gases exchange again this situation is it a negative statement is it bad it's bad right obviously it's bad it's a bad thing right oil spill is never it's attractant it's never a good thing so your answer your answer is three marks one of your mom have to write recipe evasion rate increases or decreases that will be your first month again as I mentioned don't leave your question blank you know something you write something at least you got a few months right mean don't blink when you blind you have nothing so the rest Innovation rate of cost decreases because it's a bad statement so that will be your first Mark and then we are saying because that the lantises is blocked by the oil there will be no gases Exchange okay so we can say rate of respiration decreases I will cover Yuma tafos of Mangrove tree it blocks the lanti sauce at root why why June hunt how did you well really can send money or not that I mean I know now that I know that you can send money I mean I didn't know that thanks uh thanks for your contribution okay anyway for real yes for real he's doing this for real couldn't agree you are really uh you are really uh okay next question six question six is uh form four chapter nine form four chapter nine okay formal chapter nine is a chapter that you have to understand good as well because this question did not came out last year so maybe this year you have a higher chances of coming up okay 6.1 shows a digestive system we're gonna do some labeling here as well the first label that we have to know is the mouth okay we're gonna label everything from here math and then they will ask you to label p and Q right P the triangular thing is liver and then Q is gallbladder um excuse me huh you are really funny okay anyway next we have pancreas the the one that looks like a leaf is called pancreas and then we have large intestine but usually in digestive system we don't talk about large intestine we talk about small intestine small intestine has three parts which is the duodenum and idiom but in biology we don't care about judging them we care about duodenum and ilium this yeah this is a duodenum and then this one is ilium okay we don't like small intestine for labeling we have to write ilium for labeling because for small intestine uh you have to only write when you talk about absorption of nutrients then you can stay absorbed into the small intestine but usually then you cannot write small intestine you have to write ilium for labor part okay now duodenum is usually between the stomach and the large intestine because it's the first part of your small intestine so that will be the duodenet okay now a lot of people when you look at the diagram of EXO figures I think you all know like extra Figures it's EXO figures you all should know EXO figures okay now when we look at this thing we have to know liver and gallbladder what is the difference because people only tend to mix up liver and gallbladder function labor function is to Secret vowel okay is the secret Bao gallbladder is too stall about remember bladder you know urinary bladder bladder is to store urine so this gallbladder is to store about storage of bowel bowel function is to emulsify fats into lipid job like that is a function of bowel okay and then uh pancreas are something that you have to take note as well because pancreas is known as the double gland what does double gland means double glam means that they can secrete enzyme and they can secrete hormone we have endocrine gland and exocrine gland endocrine means hormone okay what are the hormone we have insulin and glucagon okay exocrine gland refers to enzyme what an enzyme l a t the Lut enzyme L stands for lipase a is amylase but we have to write pancreatic amylase pancreatic amylase tea is trypsin okay T is trypsin yeah lipase amylase trypsin okay the function of insulin and glucagon you also have to know because we learned for many many times saying that insulin and glucagon is to control blood sugar level insulin is to decrease blood glucose level okay decrease you know diabetic patient the inject insulin is to decrease blood sugar level glucagon is to increase blood glucose level in normal humor we have insulin we also have glucagon okay lower and higher okay now that it is we we will go to the next question A1 done already we're going to look at A2 again Q of an adult will surgically removed explain the effect of to the digestion of lipids okay Q is a gallbladder again I say right negative statement what is your answer negative answer with what cannot unable malfunction remember when you when it's being removed the gallbladder cannot stop out cannot stop out means what cannot emulsify fats your fats cannot form into lipid droplet okay so your answer will be bow cannot be stall lipid cannot be emulsify into lipid droplet so as I mentioned cannot cannot because surgically remove we move means no more okay lipic droplet is actually to increase surface area for the enzyme lipase to work on it so when you have more lipid droplet it means that the lipid will be easier to be emulsified easier to be hydrolyzed bowel has to use emulsify this area bow you have to use emulsify and then enzyme we have to use hydrolyze okay bowel is emulsified and then enzyme is everything hydrolyzed okay next we will look at the doctor recommended diabetes monitors patient to replace white rice with brown rice in daily diet the game 6.2 shows a nutrition information for 100 grams of brown rice and white rice brown rice and white rice has different glycemic index the GI measure how quick or slow a carbon carbohydrate containing food raises the blood glucose level after consuming a consumption okay brown rice they have a lot of fiber 1.6 compared to white rice okay it's more by 1.2 and then the GI index is 68 the GI index for white rice is 73.

[00:52:27]so explain why the doctor give the recommendation of course usually when the question says diabetic patient we don't have to we don't have to explain about the fiber because diabetic nothing to do with the fiber right so we will just explain about the GI the the glycemic index so we say that lower it means that they will increase slower higher index it means it will increase faster so that's why the doctor will recommend the diabetic patient to consume brown rice because they don't increase the blood sugar level uh quickly so when the increases slowly they don't Spike up the blood sugar level in the body itself so that's why you eat brown rice for diabetic patients so far you actually it's okay whatever rice that you eat is totally fine it doesn't really matter as long as you eat your rice so you can say that brown rice has lower glycemic index then white rice so this first sentence from your observation you get one month again okay don't leave it blank then by observation you get one already well don't have to know anything just write this one you know what is it right next you can say that carbohydrate hydrolyze slowly and glucose produce is lesser these avoid blood glucose level increases quickly these avoid blood glucose level to increase quickly okay so done with this we're gonna move to the next question guys um of course as I mentioned if you think I'm too fast you can move back and then you watch again you can watch you can wash 10 times if you want to okay next a group of students carry out magnetic tests to determine the type of carbohydrate a stood a result obtained as in table 6.1 okay we have great big precipitate is formed when it's tested by dates the Kumar there's a hong South in Mandarin whatever saola okay and then we have sugar cane the color of Benedict test remains blue what does the Benedict test they test the presence of reducing sugar okay what are reducing sugar okay let me write over here first law we have binary tests they will test the presence of reducing sugar okay the example of reducing sugar are all mono and die beset sucrose so we have one we have glucose fructose galactose lactose maltose okay if you do know the example of mono diet and polysaccharides you really have to go through it again because if you don't know that it means that you cannot do chapter nine anymore okay I have a video explaining how to remember the glucose fructose galactose like those multiples are those you can you can watch again not very long what is a glycemic index name the question says what the glycemic index is to increase the bleach it is to increase the sugar in your blood the question got C1 okay now they say that dates they are able to change into break rate precipitate means what they will be reducing sugar because it's to test the presence of producing sugar right so this is actually the one that contains of glucose okay it's the one that contains of glucose how does brick brick precipitate form because magnetic test itself is a copper II sulfate copper II sulfate is blue in color you learn in chemistry right copper II ions is blue color so this big red precipitate form is because that your copper II ion yeah copper II ion the videos into copper one ion copper two is blue in color copper one is red that's why they show into a breadbeat precipitate that's why they say this is a reducing sugar they are able to reduce copper 2 to Copper one it's called reducing copper two to Copper one next we have sugarcane sugarcane is under sucrose is under so close it's so close under reducing sugar no rhyming there's one thing Tau why do you dry the gambling towel save your money to yourself dear don't don't give me this please please don't have to okay linked up please dona okay so sucrose is reducing it's not a reducing sugar so reducing sugar is you cannot change the color right sodium it will be made as blue color as we have mentioned magnetic solution is copper two ions say copper two ions guys don't need to send me money okay this is just a free class okay please don't do this okay explain why different observation of Benedict test is as shown since 6.1 okay right now what you can observe from here is we know that this is glucose reducing sugar they are able to change copper two to Copper one and then sugar cane sucrose is not a reducing sugar they remain as blue color guys observation observation you can see from the question you write your answer remember again don't leave your answer blind be safe for many many times right if you leave the answer blind you have no guys guys stop sending me money guys please okay this is a free class even though people will send to me it's my friend's La okay and also my ex student up but guys please stop it okay okay next we have to say this contains I feel like what you know I feel like those you know in in this internet we have this means like you speak and you earn money from that okay I'm not that guys okay but people sing song they earn money where people speak they earn money it's okay I want to be super okay this contains reducing sugar wow so close contains non-videosing sugar so you can say dates videos copper II ions into copper one iron and then you can see uh two months actually this is enough okay these videos cover two ions into copper one ion okay if you want to see it changes the solution from Blue to Brick with precipitate also okay but it's an observational so this one actually enough really okay can okay now damn it is we're gonna move to the next question okay next question seven 7.1 show structure of nephrons in human kidney okay by looking at this they say we have to name structure P okay actually for formation of urine it came out last year uh but they didn't ask you to label the thing but they have a question about formation of urine right now we have to label everything from here okay we just to revise again we just label everything from here so p as you can see is the C shape this C shape is a bow shape or the first sentence did I write wrongly up sugarcane thank you very much dear I got distracted by them sending me money okay sugar came okay thank you very much okay sugar cake we are so close Okay sugarcane is so close Okay so p is the C shape you call this as Bowman's capsule it's called Bowman's capsule okay Bowman's capsule next we will label after Bowman's capture this area here is called proximal convoluted tubule PCT proximal convoluted tubule this one is loop of Henley the other side we have distal convoluted tubule this is collecting duck okay we're gonna start all over again yeah in Bowman's capsule and glomer rulers oh guys don't okay filtration okay what does ultra filtration means ultra filtration it means that it will filter the small particle they're able to diffuse into it the large one cannot diffuse into it in ultra filtration we have a pressure the pressure is known as high hydrostatic pressure where does this pressure come from the pressure are from the larger uh arterial to a smaller artery which is efferent arterial to efferent arterial okay bigger to smaller now this bigger to smaller arterial it causes a pressure called high hydrostatic pressure High hydrostatic pressure guys seriously it stops stop sending me money guys okay High hydrostatic pressure so in this High hydrostatic pressure they will force the fluid to diffuse into the space of the Bowman's capsule okay now what other thing cannot diffuse into it there are three things cannot diffuse into it okay in this there is no red blood cell no platelets no plasma protein no with blood cell no plaitless no plasma protein okay there is no red blood cell no platelets no plasma protein because what because they are too large okay because they are too large to diffuse across it remember in biology we have no big we only have large large there are not bigger guys large you thought like no guys it's a free class okay I don't know why they are setting they are doing this okay please don't do this just attend the class if you get a plus I'll be very happy that would be the best gift for me if you score your exam okay just learn learn well just learn well just got A plus if you get a plus if you get a if you get a minus if you improve that will be the best gift to me okay if you improved in your exam any any exam may be from field to pass from past to a minus from a minus to a plus that would be the best gift okay next we have PCT PCT is reabsorption okay now what do they reabsorb they will reabsorb five things number one they will be absorbed fully fully hundred percent hundred percent off amino acid and glucose okay and partially n a c l water okay n-a-c-r water and ACR water so if the person did not fully reabsorb amino acid and glucose the person will have disease if the person urine contains of amino acid the person will have kidney failure if the person urine has glucose it means that the person will have diabetic monitors so remember one is kidney failure the other one is diabetes mellitus when you write crunching money you have to write diabetes monitors you cannot just write diabetes because we have different diabetes we have also diabetes insipidus diabetes insipidus is where the person produce a lot of urine because their lack of they have a lack of ADHD so that's diabetes insipidus this is diabetes mellitus malitus diabetes mellitus okay now after that we have Loop of Henley okay look up and lay they also have reabsorption what do they reabsorb right now and ACL water because they only left and a CL water okay and ACR water later I'll go to your class I will send you money again okay DCT we have also reabsorption and secretion reabsorption same thing we have n a c l water secretion are the things that we don't want okay we absorb other things that we want secretion are the things that we don't want okay what are the things that we don't want it means what is in your urine the one in your urine are the things that we don't want okay we don't want what we don't want ammonia okay we don't want you yeah we don't want ammonia with the one urea okay now for collecting duck for collecting that actually they also have reabsorption but I don't know why your textbook don't write um your question they also have the absorption but in collecting them generally they have formation of urine formation of you relocate the formation of urine so this is what happens in the kidneyla but rough idea is this one are just extinct no I just want to return the money to him okay okay p is okay p is um Bowman's capsule no it's okay Mr Mo Jun Han I'll buy you food next time okay so State the process that occurs between Global rulers and peace so we have mentioned that this is ultra filtration okay this is ultra filtration Ultra filtration our child filtration okay state two differences of the content in glomer rulers compared to the content in P okay gloma rollers and pee okay I need an example please don't write please don't write in table form you have to write in sentence for structure question no table from your inch in the sentence okay so Global rulers is the blood vessel Bowman's capsule is this thing means it's in the nephrons so what is in the grammar rulers but not in the Bowman's capsule again we say what no red blood cell no pla let's no plasma protein because they are too large that is the thing that cannot diffuse across the Bowman's capsule okay so for this answer you can just write glamor release has a red blood cell this one has platelets this one has plasma protein okay this one don't have don't have don't have lucky if you want to write differences in your structure question remember to form it into one sentence it means that your answer needs to write groma rulers contains of red blood cell where s P does not contain the red blood cell in one sentence if you separate them in different sentence you have no marks because you didn't write the differences between p and roma rulers in one sentence grommar rulers has made blood cell whereas P has no red blood cell in one sentence yeah guys remember you cannot draw a table and obviously this is the wrong technique of drawing a table like I just want to be fast okay next and in that video suffer damage in kidney that causes hematuria it's a condition which blood can be found in urine explain how this condition occurs okay why the person has urine has blood in urine is because that is because that your it's because that this situation your blood diffuses into the Bowman's capsule okay we feel I need to I need to close this how am I supposed to do this I need to I need to stop allowing people to send me money how am I supposed to do this guys okay okay never mind I'll do it later after nothing okay so remember what happened is the red blood cell diffuses into the Bowman's capsule when it diffuses into woman's capsule your urine will have blood that's all tawa enough okay so you can see on this survey distract me from teaching guys I need to ignore this um kidney what kidney infection or you can see glomer rulers damage causes the red blood cell to be filter out into Bowman's capsule this causes glomer ruler filtrate contains of blood okay so what is a glomer ruler filtrate with a glomer ruler filtrate is the fluid that diffuses into the Bowman's capsule it's called glomerular fuel chain the fluid from the glomer rulers being filtered that's why it's called glomerular future it's a fluid light it's called gromerular filtrate okay the again one The Game Shop shows two different jacket this one is jacket p and jacket Q or obviously from this diagram you can see they say that a scientists plan to make an expedition to Antarctic to carry out a biological research choose the most suitable jacket to be worn during the Expedition justify your answer from this diagram guys obviously you can see that this one is thicker this one is thinner thick and thin right if you go to a winter country which one you guys met by Common Sense of course you wear pee right okay if you go to a winter country of course you're going to wrap it you're not going to whack you because Q is too thin you write in Malaysia don't think Highland you can write is that but if you go to a country that is cold of course you're gonna wear jacket P so your answer is jacket P because jacket p is thick they can check at the air trap they can keep your body warm so that's why it's thick okay so you can see Jack cat p a tick layer of air is Chad in quotes ah act as Heat in so later more heat will be checked that prevent loss of heat from skin to environment from skin environment okay now that it is so remember sometimes when you choose answer you choose your common sense a lot of time even if you don't have biology knowledge you can also choose with your common sense I teach you a lot of things today right don't leave it blind just write negative answer when the question is negative statement okay next then I get my question is this is form 4 chapter 8 form 4 chapter 14 so release form four chapter 14. negative 8.1 shows a fish okay so that the tail zip to the left so when the tail moves to the left the fish will move to the left when the tail moves to the right the fish will move to the right okay this is how it works sir name the muscle involved in the movement of fish fish has only one muscle I mean one name muscle is called myotome but for humor we have a lot of muscle for fraud they have many muscle God supposed to go many muscle right so for fish it's called myotome what is the muscle the muscle equals to the meat that you eat it's called myotome okay it's called Mayo Tom muscle name in it one are injured explain the effect on injury of whipping fishtail compared to before injury so when the muscle is is injured no matter whether what organism muscle has only two actions one other two action you can only contract or relax okay contract or relax there's only two action human also two contract and relax fish also two front also two grasshopper also two but also two only contract relax right now the muscle got injured it means what again guys negative statement negative answer the muscle unable to move or contract and relax now that you know the the unserving way okay to answer the question okay the way to answer this kind of question is the same so today for many questions right anything you write the same answer but first you have to know the function first before you write cat now okay you have to know the function first okay so you can see my YouTube unable to contract and relax fish and able to swim forward if you want to explain more you can see unable to swim forward due to unable to produce forward Trust forward transmission forward it's called forward trustler okay now done we're gonna move to the next one okay next one is human okay we actually mean like in my class I do love human question actually 8.2 shows the structure of an Italy's arm while playing badminton we have to name the structure okay now we have to name Jacob J L and K together we will also name other thing so K obviously is a muscle where people like to show the arcade so this K is called bicep muscle I mean all the boys are for some reason I don't know why they like to show their bicep muscle so when you have bicep means you have tricep muscle why is it called bicep and tricep because bicep means two we have two muscle over here tricep means three we have three muscle at the back L is the connection between a muscle and bone muscle to Bone we call this as tendon pendant remember tendon muscle bone T and B okay tendon they will connect muscle to bone okay just remember T and B tendon muscle bone okay we will also label the bones as well guys just in case you guys don't remember the bone okay uh in this diagram this one over here we can see there's a u shape the u-shaped one is called alna This is called radius this is called humerus okay radius ulna humerus bicep is left all the boys they are obsessed with their own biceps I don't know why not some boys when they have no big muscle or when they have too big muscle line it's a bit a bit scary when the muscle is too big imagine one day your friend one punch to your face then you're gonna die so yeah it's a bit scary guys okay so we have the answer for LL is a tendon the athlete experience Microtech on muscle K due to daily intense training a Microtech is a mountain by the way once this has one once this happened the blood flow this is flow yeah blood flow will be concentrated to the area for recovery process of muscle K explain how the blood flow can help recovery of muscle okay because when you have blood flow means what you have oxygen because blood equals to with the cell with blood cell they have oxygen so oxygen means that they are able to carry out cellular respiration where you produce energy when you have energy it means that you have mitosis okay this one link a bit too far but you have to remember they're linked this way up so uh maybe I'll write down okay blood flow means that you have cellular respiration cellular respiration means you have energy when you have energy it means that you can carry out mitosis mitosis means it's to for cell to regrow right so cell can grow repair damage salt because to roll cell you need carry out mitosis so we need to have this uh thinking body it comes in a flow bicep is bigger than my producer that's a bit scary maybe because you are too skinny dear there is a ball and socket joint okay it has a ball and socket joint over here this is a ball and socket dry this is a hinge joint okay dry is at the shoulder this is a hinge joint okay now back to this in the sentence we're gonna form into one sentence over here by saying that Bloods cavi oxygen for cellular respiration this produces more energy enable muscle to repair or you can see produce by mitosis by mitosis okay next 8.3 shows the opinion Seahawk Malaysia suggested by the Ministry of Health Malaysia okay this one is a very common diagram that you will see your exam we call this as quarter quarter half okay what is a quarter quarter half quarter quarter half means what quarter carbohydrate quarter protein half fruits and vegetable is called quarter quarter half okay it's a thing that we follow in Malaysia it's not in biology even in Malaysia the government also suggests us to eat because Malaysia we have a lot of obese problems as a nutritionist modify the nutrient nutrition guide on 8.3 to suit the need of an athlete that undergoes intensive training intensive training explain your answer over here how do we explain when the person carry out intensive training what do they need number one they need more protein why because protein can build more new cell number two they can eat more carbohydrate because carbohydrates gives them more energy so either you want to write on carbohydrate or either you want to work on protein whichever you prefer but we don't really explain our foods and vegetable a lot because if you want to you can talk about the minerals because food and vegetable they have minerals that's needed for a muscle to prevent muscle cramp or vitamin D no there's a lot of minerals but if you want to choose the easy answer you choose carbohydrate because they have energy protein they are able to repair or to produce new cell just the easy one to make your life hard guys biology is very very hard you still want to make your life hard this is what you can say increase intake of carbohydrate to provide more energy okay if you want to write platinos okay you can say increase intake of proteins to repair damage cell or to produce new cell okay now done with this we're going to move to the next question nine or finally AC question one and a half hours to eight question a bit too slow guys okay the first electrical Vehicles was introduced in Malaysia on 2013 it releases less greenhouse gases and pollutants compared to normal car and this will help to increase the quality of air in tongue areas okay question nine is actually from form 5 chapter 10. form five chapter 10 is a question that you need to know okay Diet also need to know this chapter because it can be any question any possible question any subtopic any question you can also ask this let me make a 9.1 shows the online news article about the rising interest in public of owning an electrical Vehicles so they say that electrical vehicles are trending with many on social media posting photos and talking about their happiness and pride at owning one okay electrical color based on the article above Define Green Technology okay actually this year we you also have a lot of passion based on Green Technology because lastly they didn't ask me technology so let me give you the proper definition of Green Technology first and then we have to improvise the sentence based on this article because they say based on the article right okay now what is Green Technology in your textbook yeah Green Technology let me write a purple color first green technology is the development and application of products equipment and system to preserve the environment and nature while minimizing and reducing negative impact of human activities okay this is based on your textbook but if you want to based on this article okay based on this article what the question says I mean what is this article saying they are saying about electrical cars like electrical Vehicles right EB right so right now the products it will be the EV electrical Vehicles what is the negative impact is air pollution air pollution right so we have to slightly modify this sentence so we can base on this article so your sentence it will be this way let me write over here okay this is based on the article yeah so your sentence will be introduce introduction or introduce also can of electrical vehicle release less Greenhouse gases these reduces air pollution in town this video says sorry this video says air pollution in town so actually when the questions say based on the article we have to slightly modify the sentence if you cannot perform this the one in red color if you know the one in purple color actually also call right you just change this word just change the one I bracket or underline and then to the question then your answer is correct actually so your answer can also be development and application of a electrical vehicles to preserve the environment and nature about minimizing air pollution also can actually don't have to follow the one in red color if you know the purple color you just edit the question a little bit then you have your answer with you okay now next question this question also never came out last year this is a new thing maybe you will see this year 9.2 shows the step of producing an Eco enzyme detergent from food waste so they say that they use 300 300 grams of orange dress and then they have 100 grams of brown sugar one liter of Warm Water 2 gram of yeast putting into a two liter of plastic butter then you shake shake shake a bit you have the bottle cap and then you have to open your cup as you can see in these two weeks time you have to open your cap because you want to release the gas right you don't want your butter to explode right it's a plastic bottle guys Comfort we're gonna explode if you never opened that if you never opened the cap we did means every every one day you have to release the gas so you have to put it in Optimum temperature which is 35 degrees Celsius usually is at the back of the refrigerator also kind of 35 is the optimum and then after two weeks you filter the thing the solid thing and then you only use the liquid and then you can use it to wash whatever your your flour maybe your toilet you can also use this but nobody use this to wash your platelet I mean if you if you want you can actually because it's eco-friendly now the question I want you based on 9.2 describe how to produce your own Eco enzyme detergent if you never see this in your revision before can you still this can you still write the answer of course you can why because they give you all of the information that you need you just have to form into sentence you're not in Primary School you look at the diagram you form sentence right now you're going to do the same just can't two c as well now you look at the diagram you form sentence definitely you can do it if you cannot get a five marks at least you can also get four months guys is it very hard not very hard again biology is not so hard that you think it is as long as you understand the way of writing the answer understand the logic behind it everything is not very hard okay but you have to spend time doing question only you will know like you only know the pattern of it like today we try one question I tell you there's a lot of things that you use the same way of answering right so this one when I look at the diagram you form in two sentence yeah okay they say what put 300 gram of Orange zest and 100 grams of brown sugar 2 gram of yeast and how many liters of water one liter of water of warm water into the bottle is too little just now too little into two little plastic bottle and then you can see brown sugar provide same as next not same as relationship otherwise your relationship problem okay so brown sugar provides whatever fermentation uh provide a glucose for fermentation okay and then and you say and yes producers carbon dioxide so over here we just write carbon dioxide if you want to write ethanol also can because fermentation it will produce ethanol so you want to see yeast produces carbon dioxide or you want to write Eternal also can if you want to write energy also it can but um energy is not really needed in this lab but if you want right energy also can and then you can see close the cap of the bottle tightly and Shake vigorously until brown sugar is dissolved and open bottle cap to release the pressure let out guess produce three times a day for two weeks put the bottle in a place where the temperature the temperature it's 35 degrees Celsius after two weeks filter solution and keep Solutions in air tight container keep filter solution about filter over here filter solution in airtight continuous just an average release student I don't believe Ling Tao is not average student thing is okay okay then we're gonna move to the next one okay again if you think I'm too fast you can wind back and wash it and write it again okay guys don't worry your next question State the advantages of using equal enzyme as a cleaning agent of course is Advantage okay what is the advantage when you think of Advantage number one you save money save money right equal enzyma you make it by yourself but you use your waste product to make it by yourself of course you save money number two it's eco-friendly you have lesser waste disposal and then you can make sure that there's no pollution so this is the advantages number one the easiest one you can say save Manila safe on cleaning costs and environmental friendly and as you can say reduce waste disposal to landfills prevent clock in drainage okay so like three three months is enough if you want to write other also you can if you want to okay next we're gonna look at question C having question 11 yet questions see okay 9.3 a and 9.3 B shows two human activities that threaten ecosystem discuss the effect of activities 9.3 a and 9.3 B towards ecosystem So based on this 9.3 a you can see that this is actually the forest station just in case you don't know but you can quite see quite obviously this is deforestation the forest station and then you can look at the B is actually greenhouse effect or you can say global warming so this is greenhouse in fact or you can say global warming but usually if you want to write global warming I would suggest you to write greenhouse effect first because greenhouse effect leads to global warming okay now we have to discuss the effects to the ecosystem guys they say to the ecosystem nothing to do with human don't have to say all human no job nothing to do with human but to the environment yeah um six marks so we're going to start with means three three large so three marks for 9.38 3 Max for 9.3 B so it's not very hard to write 9.38 answer when it comes to deforestation means there is no natural habitat there will be Extinction of Flora and Fauna you can also see that there's no uh they will have increase of carbon dioxide which is greenhouse gases where 9.3 is a greenhouse effect greenhouse effect is what when there's too much of greenhouse gases that check heat in the earth they will increase the temperature of the earth it will cause the pole north and south pole ice when it starts to melt they will have flood in lower lying area because the increase in seawater level right then they will have flood in lower lying area so don't have breakfast so many things just like three three then your answer is actually enough already so for this one you can say diagram 9.3 a you can say this is 9.38 shows the forest station and then you can see this disrupt food chain that leads to Extinction of flora and fauna loss of rain water catchment area what is the rain water catchment area they will absorb water by using the roots of the plants in the forest so it's called water catchment area and then next you can see they have soy erosion what is the soil erosion means that no roots they cannot anchor onto the ground when the rain comes they will have landslide so it's called soil erosion soil erosion is not it's not the soil it's not good it's it's only referring to when there's no tree roots to ankle onto the soil it's called soil erosion so salt erosion happens which leads to lands light and flash flood okay so this is enough for 9.3 a and then we have 9.3 B diagram 9.3 B shows greenhouse effect if you want to write global warming you can explain to the next sentence so you can see excessive Heat trap on Earth that causes global warming um the Earth temperature increases causes melting of ice at holes which increases sea water level and that leads to flood in low-lying area so this is 9.3 B okay so that mean this you're gonna move to the next one next page guys so next page 9.48 shows the condition of a lick nearby Factor VP which does not have any effluent treatment system okay now what is the influent treatment system so this is water why there's a box box nearby fertilizer guys this is fertilizer I don't know why fertilizer Factory p and this is fertilizer Factory queue no one is a box box but it's a fertilizer and influences influence system influent refers to um liquid waste liquid waste waste water a lot is called liquid waste it's effluent so they use this treatment system to to remove the liquid waste so to prevent eutrophication over here so they say if the fertilizer Factory p and fertilizer Factory Cube so fertilizer Factory P it forms into a layer of algae in this Lake but fertilizer Factory P there is there is a treatment system there will be no algae bloom in the lake so they ask you to differentiate the effect of fertilizer p and Q two words ecosystem and Aquatic organism in both leg the question is only four marks don't have to work very long but you based on what you understand from here you just write uh the layer of algae will form when the fertilizer contains of nitrate and phosphate because what causes formation of algae is where the fertilizer has nitrate and phosphate they will promote the growth of algae so the algae will cover the surface of Lake sunlight cannot goes into it when sunlight cannot goes into it the aquatic plant will die first why the plants will die first because no sunlight no photosynthesis when the plant died they will start to decompose who is the decomposer the decomposer in this case is called aerobic bacteria aerobic means what they have to use oxygen in the water to decompose it's called aerobic bacteria once it's being one is being used up there will be no oxygen much less much in the Water The Aquatic organism which is the fish will die the fish will die because there is no there is no oxygen we have a thing called bod biochemical oxygen demand the demand for oxygen increases the supply is lesser eventually everything will die and then they will form into this green thing and it smells it smells not very good actually so four marks you can write differences yeah so this is p this is q I'll write P only because Q is just opposite answer so P you can say eutrophication a curse due to high content of Nightshade and phosphate and then algae bloom occurs that prevent penetration of light into water this decreases rate of photosynthesis that leads to death of aquatic plant and then you can write the level of dissolve oxygen decreases b o d level increases water it's polluted so if you want to write Q you only have to change this okay let me underline the word that you have to change so you can write by yourself yeah so that's not occurs low content does not occurs a lot of sunlight increased rate of photosynthesis no depth of aquatic plants increases of oxygen in water bod level increases water is not polluted okay I think this one you can write by yourself because it's just opposite meaning right okay I think you can write by yourself okay now done with this we will move to the next question okay the next question it will be question 10 this one is a vascular tissue this is form five chapter four okay it's a chapter that you have to focus as well in your exam because they see a lot of State paper they have these vascular tissue xylem phlobum and transpiration and also translocation you have to know as well so this one shows a vascular tissue from this diagram they said if you don't know what it is okay read the question they say what explain one structural adaptation to transport water implant water guys to transport water obviously this one is what xylem xylem okay to transport water it has to be xylem structural adaptation means what things that we can see it's called structural okay structure are the things that we can see now from this diagram what you can see you can see there is a hole at the side the small small hole at the side we call this as p p i t h can you write VOD or you need to write for one action you need to write the full one before you write bod if your question keep on you have to repeat the body you have to write biochemical oxygen Demand only you can write bod actually for the rest of the question you have to write one time and then you bracket bod and then the rest you can write bod okay so uh back to this again the small hole at the side is called p p i t h p-i-t-h pits is to allow sideway movement of water and the xylem is taken by the lignin okay this dialum here is taken by the liquid the function of lignin is to is to prevent the plants from it's a prevent the xylem from collapsing it's a type of mechanical support so either you want to write taken by lignin or you can write pits because both are structural adaptation things that we can see or you can say that they have hollow tube Long Hollow tube to transport water continuously also okay so we have a lot of answer to this it depending on which one that you want to write like so you can say has pit alone water a lot of sideway movement of water sideway movement of water to at Jason cell adjacent means neighboring cell okay it's quite digestion cell or you can say taken by Lake mean or you can say lignify wall and then your explanation you can see it provide mechanical strength and prevent it from collapsing okay also can okay if you want to write long elongated Hollow chip to allow continuous flow of water also okay and whichever you prefer just one because this is one mark this is one Mark so it's two months of course remember to write in sentence yeah means you cannot write you can you can say that xylem has teeth xylem is taken by the lignan you cannot write this one you have to write in a sentence yeah short sentence short and nice sentence don't need to write therefore it is no those sentence don't have to okay next let's look at B 10.2 shows a plant exposed to Radioactive carbon dioxide radioactive carbon dioxide and they say that the transparent plastic bag that contains radioactive carbon dioxide so uh we have bug remove Canal when it comes to bug remove what do they remove they will remove the floor so flow worm is removed in this case flow worm is removed and then K is above the ring L is below the ring because when is being removed means that they will not transport the sucrose from the leaves to the roots it will only stop at this time okay now two think of radioactive carbon dioxide what does it relates to this part we have to think about photosynthesis photosynthesis equation is started with this they need to use carbon dioxide water with the presence of like and chlorophyll yeah chlorophyll they were produced into oxygen and glucose oxygen glucose is c6h chalk o6 so this is the equation for photosynthesis now what does the carbon dioxide come from right now leap is the one that carrier photos into C strike but as you can see the top part of the leaf they have one they have radioactive carbon dioxide so this carbon dioxide is a radioactive carbon dioxide whatever they produce right now is actually radioactive sucrose because it's radioactive carbon dioxide right so it will be radioactive sucrose or radioactive glucose that condenses also closed up they asked after 36 hours the plant is tested to determine the presence of radioactive substances radioactive sucrose is detected in GDK explain how radioactive sucrose is present in Chile again because the one that you use here is radioactive carbon dioxide and then they will diffuse into audio used to produce glucose glucose is then stored in the chloroplast and then they will condense into starch and then the sucrose were diffused into the stem okay because we have this thing is hyper hypotonic the water will diffuse not the water the sucrose but diffuse into the flow worm due to active transport and then the water will diffuse into it the process here involved of translocation I don't know if you guys remember what is translocation okay translocation is involved in uh flow worm so they ask you why only K has it l don't have it because of flow worm foam is the one that transports sucrose from the leaf to all parts of the plant okay now we have to explain in detail so you can understand better yeah so we cannot write a remark over here the radioactive sucrose is because we have translocation translocation is to transport sucrose because translocation this one have to use flow worm it's organic substances so we have to use flour so in sentence y we have to say that Radioactive glucose is produced in leaves true photosynthesis is the one that we say just not the produce photos Mutual photosynthesis to use you use the radioactive carbon dioxide right so you produce a radioactive glucose next the Radioactive glucose condensed to form starch and store in leaves so after that from leave they will go to the step so you can say radio Radioactive sucrose is actively transported into safe Cube okay flow worm has seed tube they have sieve plate they have companion cell companion cell is the one with mitochondria because you need to be actively transported right active means what active it means they need energy the energy come from the companion cell which is the mitochondria so that's why we have seed Cube we have companions at the side so C cube is quite empty inside like it's called Safety blood and then we have a music tip has cytoplasm and then you can see a sieve tube through companion cell water potential in sieve tube decreases causes water to diffuse from xylem into C Cube by osmosis okay now why is water involved in translocation okay with the second sentence again they say that the sucrose transport into C tube so sieve tube right now has more glucose more glucose means what lesser water it forms into hypertonic situation over here so because they are hypertonic the water from the cell because element flow is always together right so phloem is hypertonic the this one got more water right so the water will diffuse into the flow Worm by osmosis more water to lesser water because the sun got lesser water more sucrose right so they will diffuse into the phloem right now so that's why they say water potential in zip tube means in the flow worm decreases lesser water but there's more sucrose that's why the water from the xylem it diffuses into the seed tube by osmosis because they always want to achieve a dynamic equilibrium okay and then we can say that this increases hydrostatic pressure in sieve tube that causes flow worm set to be push along the sieve Cube to other organs of plan phloem step here refers to the sucroseia the phloem set because in the textbook direct flow I'm set so we just follow from if you want to write sucrose also can because it's the same thing and then you can say flow worm sap is transported from sieve tube to is a one bit radioactive sucrose just now so this is the answer of uh the question so this is to relate back to your translocation process okay now usually after translocation for essay question they will ask you about transpiration usually usually they will ask about transpiration where the next question okay I haven't had a transcription it after that is transportation really active so close it's not detected in Chilli out explain why because they are below the ring when you remove it you remove this part right chili L is below the ring so the radioactive sucrose it will not go down to it the leaf here is not radioactive carbon dioxide so that's why they will produce a normal sucrose no radioactive sucrose over here because all of the radioactive is being accumulated above the ring so your answer you can write flow worm is remove and then Radioactive sucrose cannot be transported two lower part of ring lower part of ring refers to the chilly air or lower part of rain okay now done with this we're gonna move to the next one the next one is transpiration transpiration actually not very common to be asked in SPM but actually it's very common to be asked in your school exam paper but this question never came up for a very long time now so you can also study transpiration 10.3 shows the transportation of water in plant this shape the water process describe the process of water movement starting from X to Y is that okay now transpiration has three process from the root to the stem to the leaf we have three different process so X from the root it is known as a root pressure this one over here is called root pressure why at the stem it is known as capillary action exact it is known as transpirational pull transpirational pull okay now root pressure has a lot of things that we're going to go through later but capillary action is very significant why because capillary action has two different action over here false okay we call it false we have cohesive and adhesive capillary action cohesive false and at his C Force cohesive refers to a bond between water and water adhesive is water and xylem work because without this cohesive and adhesive your water is not possible for you to move against the Gravity from the roots to the leaf is Against Gravity right how do they move against gravity because they are cohesive and adhesive they will stick together between the water molecule they stick to the xylem wall so that's why they can move against the gravity transformational pull is from the leaf to the stomata it will release the Waterway but okay now back to this again we will start from the roof I'll write the keyword at the side later we're going to form sentence later on so from X over here we will start from the soil to absorb water water always come from soil okay so over here we will start from soil um soy water okay soy water it is being absorbed to the root cell okay from the root cell it will goes to the cortex cell or context is one of the area where they will store food like it's a cortex cell from the cortex cell it goes to endodermis and though dummies has a very special thing called casparian Sheep okay let me write over here I know that means they have casparian strip okay the function of casparian sheep is to act as a waterproof okay they will block the waterless car casparian shape and then from the cat from the endothermist it will go to the xylem vessel is at the root from the root xylem vessel it will go to the xylem vessel of the stem from the stem Cellar vessel it will goes to the xylem vessel of the leaves from the Zella vessel of the leaf it will goes to meso fuel cell or spongy massophile cell because they have a lot of loose they have a lot they are arranged Loosely so once it arranged Loosely it means that they are able to diffuse out to the stomata as a water vapor from the mesophyll cell it will go to the air space which is the average Loosely area from the air space it will goes to uh the stomata so you can say water loss true stomata and then it goes to the atmosphere it goes to the atmosphere so by writing this sequence over here the question is but the sequence over here you can actually form up to 10x how do we form up to 10 months we have to include the process as well from the soil water to the root cell we have to use a process called osmosis okay or small Caesar from the root cell to the cortex is also osmosis cortex to the endothermist is also osmosis and though the Mist the xylem vessel we call this as root pressure we call this as root pressure Xenon vessel to understand root to the stem uh is capillary action capular reaction to the leaf we don't have any name because it's from the stand to the leaf is by the same action it's called capillary action and then from the mesophyll cell we have transpirational pull over here transpirational pull and then we have water evaporate to the airspace and then it will form into water vapor and then the last one is called transpiration so by writing this in sequence we have seven marks okay let's form into seven into into sentence right now okay it will be a quite long answer for x y z but actually in exam you don't have to I mean like because we left two weeks for biology right we don't really have the time to go through sentence by sentence so when you when you read open you when you're trying to revise you can write the keywords again this is how I do this is how we usually do it right in keywords and then you just write in a sentence it will be the best way for you to revise that because you only like two weeks right now so in sentence guys for X let's form sentence X so you can say root pressure happened in x water from soy diffuses into root hair cell via osmosis which causes a root hair cell to have high water potential and then you can see water diffuse from root hair cell into the mix and if you want to write pericycle layer also can if you're the one it's okay actually pericycle layer via osmosis and then we can write root pressure push water from xylem vessel of root into xylem vessel of stem this is for x and then we have y Y is the stem stem is called capillary action copy the reaction happens in y and he sief false between water molecule and xylem wall and cohesive false between water molecule now how do you want to remember whether which one is a cohesive or adhesive remember adhesive is at means what two different things molecule and xylem what is two different things so it's called adhesive cohesive means it's the same okay if you want to remember that but it's not it doesn't mean the same so cohesive means is water between water water molecule and water molecule actually between water molecule and I can see water molecule move against gravity okay and then we have the last one which is Zach Zach is transpirational pull so you can say a transpirational pull transpirational pull is produced when water diffuse from neighboring cell via spongy massophile cell by osmosis next sentence you can write water diffuses out as water vapor true open stoma last sentence we can write it pulls water molecule in xylem vessel of leaves two outside of leaf so this is the transfer ratio this is the transpiration of plants okay so of course you have any question you can ask me no question and we're just going to move to the next question okay okay next like I mean of course if you write very slowly you can just wind back and watch again as I say for many times okay next two 10.4 shows that transpiration are shows at 10.4 and transferation are two processes that consists permanent water loss from plant leaf to the environment so differentiate the two processes okay right now the one that you see in 10.4 is called gutation so gutension they will release water droplet not Waterway but transpiration is water vapor water vapor is 100 pure water water droplet they have a lot of minerals inside and gutation happens during daytime transpiration it happens during day and night time so gut patient usually okay because it's only three marks you can write the difference between the water whether it's water vapor or whether it's whether it is a water droplet you can see the content in the water you can also mention that it happens during day or night time so 10 points this is 10.4 this is transpiration the 10.4 referring to gutation by the way it's called gutation okay so right differences between gutation and transpiration number one we can see it happens at Mac or you can see early morning and then this one happens on hot and windy days okay next we can talk about the area where it releases water also okay so you can say water is released shoe special structure at end of leaf veins okay this special structure it is known as it's known as hydatodes the other one the water release true stomata and then you can see water release is in the form of water chocolate it's one water release is in the form of water vapor so water droplet is the one that threw it mineral water vapor is a pure water so that's the difference between these two okay if you want to write more of course you can write more but the question is about three months right you can just write three differences remember for AC question you can actually write in table form this is a correct way of writing as long as you're working in a short sentence short full sentence don't write keyword keyword keyword okay in easy question you can write in table formula guys okay question 11 the last question guys last question this is form five chapter 12 under radiation 11.1 shows two picture of same Siamese cat x with different fur color on certain part of the body the first color is affected it's a factor not effective is affected by Four Season based on 11.1 explain the effect of temperature on different fur color of Siamese cat X so when it comes to variation baby Aviation has two different causes we have genetic and also environment so let me write the causes over here so you can remember them so we have causes of deviation so we have continuous deviation we have this continuous deviation continuous deviation it will be either genetic or Environmental okay these continuous can only be genetic okay now what is the example of continuous for example your height your weight is continuous Aviation it can be affected by your Gene it can be affected by environment this continuous deviation is only genetic for example your blood group your fingerprint you can't change it's called discontinuous so just remember continuous is continued to be defense it's called continuous genetic we have three different examples for the causes of Aviation the first it will be crossing over okay crossing over it'll be one of the variation that's why everyone will be different because of crossing over next we have independent assortment independent assortment is under meta phase one how does metaphase one arrange it will cause you to have different genetic Arrangement last one is random fertilization okay this is the continuous discontinuous genetic Factor over right now the question says that this is temperature temperature is environment right how does the environment causes a difference when during summer time it has more white part I mean I know the diagram is not very clear like a small white part and during winter time there will be more black color part right based on this diagram that you can see because this is by temperature uh they will have enzyme that causes them to show more black color in different weather so it's because of enzyme lab this one you can write by saying that temperature is Environmental Factor Siamese cat X inherited the gene the gene produce dark pigment for color enzyme only function when surrounding temperature is lower than body's temperature lower than body temperature I mean actually we never learned the pigment for cats in biology but based on this diagram at least if you don't know you can still write the first and the third sentence without writing the enzyme actually you still have maybe one Matlock if you don't know what is this you still write something expect something that you know okay next lower than body temperature yeah the surrounding temperature is lower than body temperature okay next we will see B 11.2 shows the patient body with genetic defect okay this is a sickle cell anemia how do I know this is sickle cell anemia because this one here we have a single shape a sickle shape means what it means is a Sickle Cell animal they say explain how genetic effects affect half condition of patients genetic defects affects health condition health health condition of patients people with sickle cell anemia they will have lesser oxygen lesser hemoglobin due to the shape right the the red blood cell the hemoglobin will be crystallized due to a base substitution this is because of gene mutation because of base substitution the gene means the hemoglobin will crystallize they will transport less oxygen the person will have less oxygen for lesser cellular respiration means lesser energy the person will feel fatigue easily or faint easily actually no matter whether it's sickle cell anemia thalassemia septum defects the answer would be the same I mean like the health condition will be the same the symptoms will be the same so over here we can say that the patient has sickle cell anemia sickle cell anemia is what we spell wrongly anemia sickle cell anemia the red blood cell s are sickle shape due to gene mutation the gene mutation refers to base substitution refers to base substitution yeah okay if you want to know more about the base substitution actually this one you don't the right but just for information purposes it's called base substitution the base substitution is where the adenine adenine is a is change to time in which is T and then you can continue to explain if you want to but if you want to write this also camera actually this causes production of abnormal hemoglobined which crystallize and stick together let's have more globin can be transported two body cell less energy is produced and then you can also mention that patient faint easily so the symptoms over here it will be the same when the question asks okay let me write down the symptoms see terms ah similar for anemia sickle cell anemia um septum defect or you can go for thalassemia the symptom will be the same so the one at bracket if they ask you any question about this you can write the same symptom less hemoglobin can transported to the body less oxygen lesser cellular respiration and then the patient will pain easily okay so this is the answer okay now now with this you're gonna move to the next one the next one they say 11.3 shows the deviation of hand length is it and 11 point B shows the variation of shape of human hand okay so uh s is 17 cm T is 23 cm and then b 11.3 b it shows a normal time and a Hitcher hitchhiker time still the differences between the baby Asian 11.3 a and 11 on 3B so the length of the finger shine okay the the hands length is actually depending on your environmental Factor as well maybe because that you are a person who always play guitar okay your left hand and your right hand is different size if you always play piano maybe you can extend your finger longer so this is actually by your environmental I mean of course genetic is one of the factor but it can also be environmental that causes your finger to be longer but normal time and hitchhiker time is different if you can do this okay my time is actually a hitchhiker time you can me if you notice okay there's a shape over here this is what we call as hitchhiker if you cannot bend it means that your normal time this is a gene it's not because that yeah I mean we have talent no it's because of Gene this is hitchhiker that you can bend into a shape over here is because of Gene so one is continuous deviation one is discontinuous deviation so when you write your answer it's three marks right so 11.3 a 11.3 b so what you have to write is you write whether they are continuous or discontinuous the characteristic is distinctive or not distinctive means obvious non-distinctive means not obvious whereas the normal time and hitchhiker time is very obvious whether you can or you cannot the length right 11.38 the length of the finger is this distinctive it means that you don't have a correct figure to show that this is a long or short finger we do not we always have to compact only we have to know right how do we Define that 70 cm is shot maybe deeper finger at 5 cm now the test I mean baby they are five cm it's not short right so this one is called non-distinctive we have no answer to this but you can and you cannot it's distinctive so for 11.3 a we showed as a continuous this is a continuous variation this is a discontinuous variation and then this one it shows intermediate what is intermediate characteristic intermediate it means that intermediate characteristic it means that there's a range okay for example height is intermediate there are also continuous variation it means that maybe between a 100 cm to 150 cm is shot 151 to 200 is tall so we have a range to show whether they are shut on top and maybe at 30 kg is too skinny 40 to 31 to 50 kg is normal for example also we have a range to show this but this continuous there's no intermediate characteristics so this one right no intermediate characteristic and then you can see that the characteristic is not distinctive not distinctive means not obvious this one is distinctively you can write by yourself okay if you want to write another one by saying at the graph so for continuous deviation it will show a bowel graph so you can say a biograph is a normal distribution the graph show wait normal distribution this one shows a discrete distribution discrete distribution okay so this is the differences if you want to write this of course you can write the rest of it but this is the easiest one to write guys in an exam if you don't know what to write you choose the easiest one to study and choose the easiest one to write okay so done with three Mouse we're gonna move to the next question 11 Point show four shows different type of tomatoes discuss the advantages and disadvantages of genetic modified foods towards human life of course right now the food that we are taking most of the food that we are taking is actually genetic modified food right now at this current moment we don't have any disadvantage yet I mean to human body like okay we don't know yet okay yet it's a yet okay maybe in the future we will see the disadvantages the advantages is you can produce larger amount with a lower price and with a better quality higher nutrition these are the advantages of using genetic modified food so and the food can be bigger it can be higher quality higher nutrition the disadvantage it could be it could be it will be maybe certain gint the bad Gene transfer to the body or maybe there are past resistance so maybe the the more that we eat maybe we could be pest resistant or whatever herbicides resistance so the disadvantage actually is lesser more on Advantage so you can write three disadvantages and two advantages so you can get five if you want to write three three also cannot but no don't erect so many so for advantages yeah advantages you can write the cost of food reduces the production increases the new tree or nutrients nutrients content in food increases and then you can say increase quality of food the disadvantages disadvantages you can write the natural species will be attractant threaten and then you can say it causes human resistant to antibiotic due to unforesy on 4C genetic genetic mutation now we don't know yet actually we really don't know yet we don't know what is the disadvantage of eating too much of genetic modified food if you are worried it's okay I live longer life than you if I'm still alive I'm still surviving in this earth it means that you can still eat the food okay if you want to write another one also you can write possibility of genetic modified Gene transfer to Human but we don't really actually we really don't know yet most of the food that we eat right now is all mostly genetic modified the rice the vegetable everything is genetic modified but it's yummy right I mean it's yummy then it's no problem okay next e 11.5 shows an information related to allergy free meal okay in 20 to 2012 a company owned by the New Zealand government engineer account to produce milk without Beta lactoglobulin protein that may cause allergy which is lactose-free milk actually this cow is known as genetic modified organism such as a technique in genetic engineering to produce allergy free milk describe your answer this one we have to describe how do we genetic modify we have to take the gene out and human gene out we combine together so that we have no allergy another way to produce this is very similar to produce insulin actually if you remember how to produce insulin is a bit similar to that but insulin we use bacteria bacteria has plasmid but this one is just a cell from the cow so when we write the answer we can just write that the technique is called DNA recombinant technology the same as how we're going to produce an insulin so you can see using DNA be combinant technology and then you can say a human um Gene is inserted into counts genetic information to form recombinant DNA production of new Gene combination the cow produces milk that does not contains the beta lacto globulin so it's actually a lactose intolerance and then last one this cow is known as transgenic organism transgenic organism okay so this is how it works actually I have few more State paper that we did last I mean I did last year and the year before you can also watch if you want to uh because you know you have two weeks and then next week if you only take physics and Max you only have two subjects left for next week so meanwhile if you need more guidance of doing your paper tool you can watch my playlist of State paper I have last year's day paper I also do mrsm and the year before you can also watch so you have more guidance so I think this is the end of the paper any question you can still ask me right now for my own student we have class next week on Sunday we have six hour class for my student so if any question you can ask me no question then thanks for attending the class hopefully that you guys do well for biology hopefully that'll help you guys better to understand biology okay if I have any questions I will stay live for another five more minutes until 3 P.M if it's not then I will just end the meeting a trip okay good luck for your exam guys thanks for attending the class good luck for your physics good luck for your max good luck for your bio and Max okay bye the bye bye if you have no questions I will continue to stay here for you to ask me questions if you have a question for you to ask okay yes no no no yes no yes yes no or just wait okay if you have no question then I will see you see you in my class if you're my student no then I will see you when I see you okay bye bye bye bye Kaho bye bye bye Justine [Music] all the students I read is my own student okay see you guys hopefully that you still have time 3 P.M you can go for your physics class right now hello bye today Hawa by tivash buy the rest of you okay I'll give you guys three more minutes if you have any question to ask I'll wait for you guys remember to study guys to study well for biology it's not a it's not a subject that's very hard for you to score if you work well for the two weeks time and your basic is not so bad you can actually score A Plus okay you can actually score a plus if your basic is actually very bad you can if you never pass your bio before Within These two weeks which is next week not two weeks actually it's only one week okay one week minus the days that you can only study you can still pass your bio if you are aiming for a plus you need to do paper one more because people tend to lose a lot of money in paper one bye Tom well the life you posted yes the live will be posted so it can you can actually replay don't worry so if you if your result is usually C and you're trying to aim a definitely you can you just have to work harder within this one week after your I think it's your max strike Max is on Thursday is it after your max you just work harder to study for bio in mayo I think it's Max of physics I forgot already so of course you don't have to you don't forget about your Chemistry guys whichever that you think you need more help then you study the subject but you don't just study one subject you study every subject that you think that you need help you have a lot of way to get State paper online so just try the same paper especially paper one when you score well for paper one definitely you can score well in exam okay no question then I will hopefully see you guys when I see you guys good luck for your exam thanks for attending the class again bye bye guys bye bye bye bye bye bye