Insulin is a protein hormone that is composed of two chains, an A-chain having 21 amino acids and a B-chain having 30 amino acids, linked together by disulphide bonds (S-S). Insulin is derived from a 74−amino acid prohormone molecule called proinsulin having C-peptide and this is removed before the processing of mature insulin and during the production of recombinant insulin, the two chains were separately produced and then linked with each other. C-peptide is absent in mature insulin.
With regard to insulin choose correct options. (a) C-peptide is not present in mature insulin. (b) The insulin produced by rDNA technology has…
NEET UG 2021 — Zoology Biotechnology and Its Applications
2021mcqmedium
With regard to insulin choose correct options.
(a) C-peptide is not present in mature insulin.
(b) The insulin produced by rDNA technology has C-peptide.
(c) The pro-insulin has C-peptide.
(d) A-peptide and B-peptide of insulin are interconnected by disulphide bridges.
Official previous-year question
Held on 30 Apr 2021 · Verified 9 Jul 2026.
Options
- A
(b) and (d) only
- B
(b) and (c) only
- C
(a), (c) and (d) only
- D
(a) and (d) only
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