Question

One insulin molecule contains:

• A. Three peptide chains, two persulphide linkages.
• B. Two peptide chains, two persulphide linkages.
• C. Two peptide chains, three persulphide bonds.
• D. Three peptide chains, three persulphide bonds.

Answer 1

The correct option is C Two peptide chains, three persulphide bonds.

One insulin molecule contains two peptide chains, joined by three persulphide bonds. Insulin is a hormone made by the pancreas that allows your body to use sugar (glucose) from carbohydrates in the food that you eat for energy or to store glucose for future use. Insulin helps keeps your blood sugar level from getting too high or too low.