Which of the following hormones is an example of a polypeptide?

Which site of an enzyme is called an allosteric site?

Which of the following is an example of a protein that acts as a hormone?

Identify the enzyme that catalyses the reaction of $CO_{2}$ with water in the human body.

Identify the correct pair having amino acid $(A)$ and the hormone $(B)$ that is an iodinated derivative of the amino acid $(A)$. ($T$ and $Y$ represent one-letter codes for amino acids.)

The hormone that maintains the blood glucose level within the limit is