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Biology

Biotechnology and its Applications

Bt cotton, RNAi for pest resistance, genetically engineered insulin, gene therapy, molecular diagnosis, transgenic animals, and biopiracy make up the applications. NEET keeps it factual: which technique solves which problem, and how Bt toxin or rDNA insulin works.

Exam rules change between cycles. Confirm dates, syllabus and pattern against NTA's official site. We are not NTA.

Weightage: what the paper actually did

Biotechnology and its Applications carried 2 questions in the NEET 2026 paper. One paper is a data point, not a destiny: NTA moves weight between chapters every cycle, which is why the weightage tables deserve care. The stable facts are the paper's shape: 180 questions, 720 marks, +4 right, −1 wrong.

Sample PYQs from this chapter

Real questions NTA asked from Biotechnology and its Applications, with the answer and the working. Try before you peek.

Question 1 · NEET 2026

The toxin proteins isolated from Bacillus thuringiensis, coded by which of the following genes would control cotton bollworms and corn borer, respectively?
  1. A.cryIAc and cryIAb
  2. B.cryIAc and cryIIAb
  3. C.cryIIAb and cryIAc
  4. D.cryIAc and cryIIIAb
Answer and explanation

Answer: A

The cry genes of Bacillus thuringiensis are insect-group specific. The proteins encoded by cryIAc (and cryIIAb) control cotton bollworms, whereas the protein encoded by cryIAb controls the corn borer. Since the question asks for cotton bollworm followed by corn borer, the correct gene pair is cryIAc and cryIAb.

Question 2 · NEET 2026

The human protein named α\alpha-1-antitrypsin, obtained from transgenic animals, is used for the treatment of ______.
  1. A.Emphysema
  2. B.Alzheimer's disease
  3. C.Rheumatoid arthritis
  4. D.Cystic fibrosis
Answer and explanation

Answer: A

According to NCERT, α\alpha-1-antitrypsin produced from transgenic animals is used to treat emphysema, a lung disorder. Alzheimer's disease, rheumatoid arthritis and cystic fibrosis are conditions for which transgenic animal models are created for study, not treated by this protein.

How to practise Biotechnology and its Applications

Chapter by chapter, against real past-paper questions, on a screen: NEET is computer based from 2027. Read the chapter once, then attempt its PYQs until your accuracy stops climbing, and let the wrong answers tell you which lines to reread. If the chapter keeps refusing to stick, that has its own guide. There is also a free 12-question mock on the exam screen.

Nearby Biology chapters

Questions

How many questions did Biotechnology and its Applications have in NEET 2026?

Biotechnology and its Applications carried 2 questions in the NEET 2026 paper. Weightage shifts between cycles, so treat it as a probability, not a promise.

Where can I practise Biotechnology and its Applications PYQs for NEET?

In the BrainIt app, free until the 2027 exam: its bank holds 50,000 past NTA questions tagged to all 83 chapters, including this one, with accuracy tracked per chapter. Sample questions from this chapter are on this page.

Is Biotechnology and its Applications important for NEET 2027?

It is part of the Biology syllabus the paper draws from, and NEET 2027 is computer based, so practise it on a screen. Your own accuracy in the chapter matters more than any weightage table: a heavy chapter you already score well on needs less time than a light one you keep missing.

Something here wrong or out of date? Email [email protected] and a person will read it.