Biotechnology in One Shot: Principles & Processes Class 12 WBCHSE/NEET

Added:

Defining Biotechnology
Core Biotech Fields
DNA Manipulation Basics
Restriction Enzymes
Enzyme Recognition
Creating DNA Ends
Gel Electrophoresis
PCR Amplification
Vectors and Cloning
Transformation Methods

Defining Biotechnology

5:12
Playing Section
  • 1

    Discusses core concepts and scope of biotechnology.

  • 2

    Introduces the European Federation of Biotechnology definition.

Structure of DNA and RNA, including nucleotide composition, hydrogen bonding, and the double-helix model.
The Central Dogma of Molecular Biology, detailing DNA replication, transcription, and translation.
Basic cellular structures of prokaryotes and eukaryotes, specifically focusing on plasmids and genomic DNA.
Fundamental characteristics and functions of enzymes, including how they interact with substrates.
Real-world applications of biotechnology in agriculture (such as Bt cotton and pest-resistant plants) and medicine (like human insulin production and gene therapy).
Advanced gene-editing methodologies and modern tools, such as CRISPR-Cas9 technology.
Detailed study of downstream processing, purification, and scale-up operations in industrial bioprocess engineering.
Ethical, biosafety, and intellectual property issues in biotechnology, including biopiracy and transgenic animal ethics.
15.1K views423likes4:28:12@pwbanglaOriginal Release: 2023-02-25

Biotechnology is the application of biological processes to develop products for human welfare, with genetic engineering being a key technique involving the manipulation of DNA. Restriction endonucleases are enzymes that recognize specific palindromic DNA sequences and cut DNA at precise locations, creating sticky ends that facilitate DNA cloning. The Polymerase Chain Reaction (PCR) amplifies specific DNA sequences through repeated cycles of denaturation, primer annealing, and extension using heat-stable DNA polymerase. Cloning vectors like plasmids carry foreign DNA into host cells, with selectable markers (such as antibiotic resistance genes) enabling identification of transformed cells. Bioreactors are large vessels used for large-scale production of biological products, requiring controlled conditions of temperature, pH, and oxygen levels. Downstream processing involves the purification and isolation of desired products from the bioreactor.