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Biotechnology

Telangana Open School (TOSS) · Class 12 · Biology

Quick revision notes for Biotechnology — Telangana Open School (TOSS) Class 12 Biology. Key concepts, formulas, and definitions for last-minute revision.

45 questions28 flashcards4 concepts

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Key Topics to Revise

1

Introduction to Biotechnology

  • Biotechnology uses biological processes, organisms, or systems to develop products for human use.
  • It includes applications in agriculture, medicine, and industry.
  • The term 'biotechnology' was first used by Carl Ericay in 1919.
2

Genetic Engineering and r-DNA Technology

  • Genetic engineering involves artificially manipulating DNA to change an organism’s characteristics.
  • Traditional breeding cannot transfer genes between unrelated species; genetic engineering can.
  • Recombinant DNA (r-DNA) technology allows insertion of foreign genes into host organisms.
3

Steps in Recombinant DNA Technology

  • Isolation of the desired gene using restriction enzymes.
  • Insertion of the gene into a vector (like a plasmid).
  • Introduction of the recombinant vector into a host cell (like E. coli).
4

Applications of Biotechnology

  • Pest-resistant and drought-tolerant crops are developed using r-DNA technology.
  • Crops with higher nutritional value (e.g., Golden Rice) are produced.
  • Nif genes for nitrogen fixation can be introduced into plants.

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Key Concepts

This technique involves combining DNA fromIt is the artificial manipulationGene cloning is the processThese are organisms that carry foreign

Frequently Asked Questions

What are the important topics in Biotechnology for Telangana Open School (TOSS) Class 12 Biology?
Biotechnology covers several key topics that are frequently asked in Telangana Open School (TOSS) Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Biotechnology — Telangana Open School (TOSS) Class 12 Biology?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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