Question

42) All of the following are common functional groups found in biological molecules except A) phosphate groups. B) carbonyl groups C) amino groups. D) sulthydryl groups. E) butyl groups

Answer 1

butyl groups - are four carbon alkyl group.

phosphate groups are found in nucleic acids, carbonyl groups are found in carbohydrates, amino groups are found in proteins, sulfydryl groups are found in amino acid cysteine and vitamin B1.

only butyl group is not found in biological molecules.