NEET (UG)

Practice Test 1 — Biotechnology and its Applications

12 questions • 18 minutes • auto-graded with full solutions

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Section A — MCQ (Single Correct)

Question 1

The Bt toxin gene is obtained from:

Solution: cry genes come from Bacillus thuringiensis.

Question 2

Golden rice is enriched in:

Solution: Golden rice provides vitamin A (pro-vitamin A).

Question 3

The Bt protoxin becomes active in the insect gut because of:

Solution: Alkaline gut pH activates the protoxin.

Question 4

Recombinant insulin is made by joining its:

Solution: The A and B chains are produced and joined.

Question 5

The first gene therapy treated:

Solution: ADA deficiency (1990) was the first gene therapy.

Question 6

Which technique amplifies nucleic acid for early diagnosis?

Solution: PCR amplifies nucleic acid for sensitive detection.

Question 7

The transgenic cow Rosie produced milk rich in:

Solution: Her milk contained human alpha-lactalbumin.

Question 8

GMOs in India are approved/regulated by:

Solution: The GEAC regulates GMOs in India.

Section B — Assertion & Reason

Question 9

A: The Bt toxin does not harm the bacterium that produces it.
R: It is produced as an inactive protoxin and is only activated in the alkaline gut of the insect.

Solution: Being an inactive protoxin until the insect gut is exactly why the bacterium is unharmed — R explains A.

Question 10

A: PCR is useful for the very early detection of a pathogen.
R: PCR can amplify even tiny amounts of nucleic acid present in a sample.

Solution: Amplifying tiny amounts is why early detection is possible — R explains A.

Question 11

A: Mature human insulin contains the C-peptide.
R: Insulin is first synthesised as a prohormone called proinsulin.

Solution: A is false — the C-peptide is REMOVED in mature insulin; R is true (it is first made as proinsulin).

Question 12

A: Biopiracy is a concern for biodiversity-rich countries like India.
R: Their bio-resources and traditional knowledge can be used by others without authorisation or benefit-sharing.

Solution: Unauthorised use of their resources is exactly why it concerns them — R explains A.