The two polypeptides of human insulin are linked together by:
Correct answer: B. Disulphide bridges
- A. Covalent bonds
- B. Disulphide bridges
- C. Hydrogen bonds
- D. Phosphodiester bonds
Explanation
Human insulin is made up of 51 amino acids arranged in two polypeptide chains. one alpha and one beta chain. The alpha chain contains 21 amino acids while the beta chain contains 30 amino acids. The two polypeptide chains are interconnected by disulfide bridges or S-S linkages.
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