Question

Amino acids are produced on hydrolysis of :
A. Nucleic acids
B. Carbohydrates
C. Fats
D. Proteins

Answer 1

Hint: Protein is a biological polymer whose monomer is amino acid. Amino acids are aliphatic carboxylic acids having one basic amino group and one acidic carboxylic group. All alpha amino acids have $L$ structures.

Complete Step by Step Solution:
Protein is a biological polymer whose monomer is amino acid. In protein the amino acids are connected by peptide linkages. Amino acids are aliphatic carboxylic acids having one basic amino group and one acidic carboxylic group. The simplest molecular formula of amino acids is $C{{H}_{3}}-CH(N{{H}_{2}})-COOH$

On hydrolysis of protein the peptide linkage of the protein breaks down and we get the free amino acids. Carbohydrate is a compound of carbon, hydrogen and oxygen. On hydrolysis it does not give amino acids.

Nucleic acids are naturally occurring chemical compounds that play an important role in directing protein synthesis. Thus on hydrolysis it does not give amino acids.
Fat is generally an ester of fatty acids and other compounds. It is the major constituent of many foods. It does not give amino acids on hydrolysis.
Thus the correct option is D.

Note: Alpha amino acids give ninhydrin test as a characteristic test of amino acid. It gives off nitrogen gas on treatment with nitrous acid. Amino acids are the building blocks of the protein connected by peptide links.