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

Which of the following hormones is produced under conditions of stress and stimulates glycogenolysis in the liver of human beings?

During the process of digestion,the proteins present in food materials are hydrolysed to amino acids. The two enzymes involved in the process
$proteins$ $\xrightarrow{\text{enzyme } (A)} polypeptides$ $\xrightarrow{\text{enzyme } (B)} amino \ acids$,
are respectively

Which of the following enzymes is useful in the conversion of glucose to fructose?

Which of the following substances is responsible for controlling the sugar level in the blood?

Proteins fulfil several functions in living systems. An example of a protein which acts as a hormone is