Processes of recombinant DNA technology — NEET Biology Questions

Practice 70 questions on Processes of recombinant DNA technology from Biotechnology: Principles and processes (NCERT Class 12, Chapter 9). Free samples below — get all 70 in the app.

70 Questions Biotechnology: Principles and processes Class 12

Sample Questions — Processes of recombinant DNA technology

Try 5 questions below from Processes of recombinant DNA technology. Get all 70 in the MedicNEET app.

MCQ
Which technique is used to monitor the progression of a restriction enzyme digestion?
  • A. PCR
  • B. DNA fingerprinting
  • C. Western blotting
  • D. Gel electrophoresis
✅ Correct Answer: D
Electrophoresis shows size-based separation of cut fragments.
MCQ
What is used to remove proteins during DNA extraction?
  • A. RNase
  • B. Protease
  • C. Lysozyme
  • D. Cellulase
✅ Correct Answer: B
Proteins are removed by protease digestion.
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MCQ
What would happen if no Ca²⁺ treatment is given during transformation?
  • A. DNA will degrade
  • B. Host cell won't survive
  • C. Plasmid will self-destruct
  • D. DNA uptake will not occur
✅ Correct Answer: D
Calcium ions increase membrane permeability for DNA entry.
MCQ
Which of the following enzymes is NOT used in DNA isolation protocol?
  • A. Protease
  • B. RNase
  • C. Taq polymerase
  • D. Lysozyme
✅ Correct Answer: C
Taq is used in PCR, not DNA isolation.
MCQ
Identify the TRUE statements: I. Ligation is followed by transformation II. Recombinant plasmids enter host by diffusion III. Ca²⁺ increases cell membrane permeability IV. DNA moves towards cathode in gel
  • A. I and III
  • B. I, III, IV
  • C. II and IV
  • D. III and IV
✅ Correct Answer: A
II is false – transformation requires specific chemical/heat treatment.

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