Amino acid 'X' contains a phenolic hydroxyl group, and amino acid 'Y' contains an amide side chain group. Identify 'X' and 'Y' respectively from their standard three-letter abbreviations:

Which of the following can be classified as polysaccharides?

Glucose is a fundamental unit of carbohydrate present in our food and serves as a primary source of energy for living organisms. How many carbon atoms does a molecule of glucose have?

A potent vasodilating compound (histamine) is produced by the decarboxylation of which amino acid?