Question

Phosphorus is the major constituent of

a. Biological membranes
b. Nucleic acids
c. Cellular energy transfer systems
d. Proteins

• A. b, c and d
• B. a, b and d
• C. a, b, c and d
• D. a, b and c

Answer 1

The correct option is D a, b and c

Phosphorus is a nonmetallic chemical element of the nitrogen family in the Group $15$ of the periodic table, which is represented by $P$.

Importance of phosphorus in living organisms is as follows:

• It is a major constituent of biological membranes.
• It is a component of nucleic acids.
• It is part of cellular energy transfer systems.
• Many animals need large quantities of phosphorus to make shells, bones and teeth.
• Calcium phosphate is the most widely used phosphate supplement.

Protein is a polymer of amino acids. Amino acids are made up of carbon, hydrogen, oxygen and nitrogen atoms. It does not contain phosphorus.

Hence the correct option is
a. a, b and c