Given below are 4 statements about Insulin. Which of these statement/(s) is/are correct? [A] Insulin is a globular protein consisting of 51 Amino acids. [B] Insulin is constituted of 3 polypeptide chains linked together. [C] Insulin is constituted of 2 polypeptide chains linked together by disulphide bonds. [D] The 3 polypeptide chains in Insulin are linked together by Hydrogen bonding.

Step-by-step solution

Insulin is a peptide hormone produced by the beta cells of the pancreatic islets. It is a globular protein composed of 51 amino acids. Therefore, statement [A] is correct. Insulin consists of two polypeptide chains, known as the A-chain and the B-chain. The A-chain contains 21 amino acids, and the B-chain contains 30 amino acids. These two chains are linked together by two inter-chain disulphide bonds, and there is also an intra-chain disulphide bond within the A-chain. Therefore, statement [C] is correct, while st