BIOMOLECULES AND ENZYMES

Detailed explanation-1: -The insulin molecule consists of two peptide chains, the A-chain and the B-chain, linked by two disulfide bonds. In addition the A-chain also contains an intramolecular disulfide bond.

Detailed explanation-2: -Insulin is a protein composed of two chains, an A chain (with 21 amino acids) and a B chain (with 30 amino acids), which are linked together by sulfur atoms. Insulin is derived from a 74-amino-acid prohormone molecule called proinsulin.

Detailed explanation-3: -Insulin is a hormone secreted by -islets of Langerhans. It is a polypeptide with a molecular weight of 6000 Da, consisting of two amino acid chains A and B linked by two disulfide bridges.

Detailed explanation-4: -Hence, the correct answer is ‘Protein’.

Detailed explanation-5: -Insulin is a protein chain or peptide hormone. There are 51 amino acids in an insulin molecule. It has a molecular weight of 5808 Da. Insulin is produced in the islets of Langerhans in the pancreas.