Biotechnology and Its Applications — Class 12 Biology NCERT Solutions (Free)
Free step-by-step NCERT solutions for Class 12 Biology chapter "Biotechnology and Its Applications" — 8 important questions with detailed answers for CBSE board exam preparation.
TL;DR: Free step-by-step NCERT solutions for Class 12 Biology chapter "Biotechnology and Its Applications" — 8 important questions with detailed answers for…
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Key Questions Covered:
- What is insulin? How is it produced using genetic engineering?
- What is Bt cotton? How does Bt toxin provide pest resistance?
- Explain gene therapy. Give an example of a genetic disease treated by gene th…
- + 5 more questions in the full chapter
Solutions Summary:
| Question | Status |
|---|---|
| What is insulin? How is it produced using genetic enginee… | ✓ Solved |
| What is Bt cotton? How does Bt toxin provide pest resista… | ✓ Solved |
| Explain gene therapy. Give an example of a genetic diseas… | ✓ Solved |
Showing 3 of 8 questions
Q1: What is insulin? How is it produced using genetic engineering?
Insulin is a hormone produced by beta cells of pancreatic islets (islets of Langerhans). It regulates blood glucose levels and is essential for glucose metabolism.
NATURAL INSULIN:
- Protein hormone with 51 amino acids
- Two polypeptide chains (A chain: 21 amino acids, B chain: 30 amino acids)
- Co...
Q2: What is Bt cotton? How does Bt toxin provide pest resistance?
Bt cotton is a genetically modified cotton plant that contains genes from the bacterium Bacillus thuringiensis (Bt), making it resistant to insect pests.
BACILLUS THURINGIENSIS (Bt):
- Gram-positive soil bacterium
- Naturally produces insecticidal proteins
- Produces crystalline (Cry) proteins that...
Q3: Explain gene therapy. Give an example of a genetic disease treated by gene therapy.
Gene therapy is a medical technique that involves introducing genetic material into a patient's cells to treat, cure, or prevent disease. It corrects defective genes or provides new genetic functions.
TYPES OF GENE THERAPY:
1. SOMATIC GENE THERAPY:
- Targets body cells (non-reproductive cells)
- G...
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