What is the number of amino acids in an insulin molecule?
A. 41
B. 21
C. 51
D. 22
B. 21
C. 51
D. 22
Detail:
Insulin is composed of two peptide chains referred to as the A chain and the B chain. A and B chains are linked together by two disulfide bonds, and an additional disulfide is formed within the A chain. In most species, the A chain consists of 21 amino acids, and the B chain of 30 amino acids. acids are present in insulin.