Which two functional groups are always found in amino acids?
A. Carbonyl and amine
B. Ketone and amine
C. Amine and carboxyl
D. Aldehyde and amine
Answer:C
Which two functional groups are always found in amino acids?
A. Carbonyl and amine B. Ketone and amine C. Amine and carboxyl D. Aldehyde and amine