Home Biology Biotechnology and Its Application Previous Year Questions The two polypeptides of human insulin are li…
Biology Biotechnology and Its Application Previous Year Questions Single Correct MCQ
Published on: August 12, 2026

The two polypeptides of human insulin are linked together by:

A
Hydrogen bonds
B
Phosphodiester bond
C
Covalent bond
D
Disulphide bridges

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The correct answer is:
D

The A and B polypeptide chains of insulin are linked together by two disulphide bridges (S—S bonds).

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