A) single polypeptide
B) two polypeptide having 20 and 31 amino acids
C) two polypeptide having 25 and 26 amino acids
D) two polypeptide having 18 and 33 amino acids
Correct Answer: B
Solution :
Human insulin is a polypeptide containing 51 amino acids arranged in two chains. The A chain contains 20 amino acids and the B chain includes 31 amino acids. The two chains are linked by two disulphide bonds,
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