🔬 Biology · Biotechnology and its Applications · NEET

Human insulin produced in the body is first made as proinsulin, which has an extra stretch that is absent in the mature hormone. This extra part is the:

Answer: C peptide.

A A peptide
B C peptide
C B peptide
D Signal peptide

Correct answer: B. C peptide

Explanation: Proinsulin contains an extra C peptide that is removed during maturation; mature insulin has only the A and B chains joined by disulphide bridges.

Concept context

GM crops, transgenic animals, gene therapy, molecular diagnostics, and bioethics. Frequent 2–3 mark questions in NEET.

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Human insulin produced in the body is first made as proinsulin, which has an extra stretch that is absent in the mature hormone. This extra part is the:

Concept context

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