Option (3) is the answer because mature insulin does not contain C-peptide chain which is removed during maturation of pro-insulin into insulin. So, it contains only two polypeptide chains A and B. Option (1) is not the answer because C-peptide is absent in mature insulin molecule. Option (2) is not the answer because polypeptide chains A and B are linked disulphide bridges. Option (4) is not the answer because an extra stretch C-peptide is not present in mature insulin but present in pro-insulin.
Select incorrect statement, regarding chemical structure of insulin.
NEET UG 2023 — Zoology Biotechnology and Its Applications
2023mcqeasy
Select incorrect statement, regarding chemical structure of insulin.
Official previous-year question
Held on 30 Apr 2023 · Verified 9 Jul 2026.
Options
- A
C-peptide is not present in mature insulin molecule.
- B
Polypeptide chains A and B are linked by disulphide bridges.
- C
Mature insulin molecule consists of three polypeptide chains - A, B and C.
- D
Insulin is synthesized as prohormone which contains extra stretch of C-peptide.
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