Amino Acids are Acids Because They Always Possess Which Functional

Question

Amino acids are acids because they always possess which functional group?
A) amino
B) carbonyl
C) carboxyl
D) phosphate
E) hydroxyl

Accepted Answer

Carboxyl group (-COOH) acts as an acid by donating a hydrogen ion (H+) in a solution, making the molecule acidic. Amino acids always possess a carboxyl group.