What group of organic molecules is made up of a sequence of an amion group, a carboxyl group, a hydrogen atom and a side chain bonded to the central carbon atom? a. proteins b. carbohydrates c. nucleic acids d. lipids

Option A, Proteins

Explanation:

Proteins (Amino acids) consists of one alpha carbon with a valency of four, thus it needs to form four bonds to become a stable molecule.

Thus, protein bonds to the following-

a) A R - group which is nothing but a long molecular chain of carbon, hydrogen or oxygen

b) A carboxyl group

c) A hydrogen atom

and

d) An amino group.

Thus, option A is correct.