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The two polypeptides of human insulin are linked together by:

  1. A
    Phosphodiester bond
  2. B
    Covalent bond
  3. C
    Disulphide bridges
  4. D
    Hydrogen bonds

Solution & Step-by-step Explanation

Human insulin consists of two polypeptide chains (Chain A and Chain B) that are held together by disulphide bridges (S-S bonds) between cysteine residues.

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The two polypeptides of human insulin are linked together by:
A
Phosphodiester bond
B
Covalent bond
C
Disulphide bridges
D
Hydrogen bonds

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