which component makes each amino acid unique?\namino group\ncarboxyl group\nr group\nphosphate group

which component makes each amino acid unique?\namino group\ncarboxyl group\nr group\nphosphate group
Answer
Answer:
C. R group
Brief Explanation:
All amino - acids have an amino group and a carboxyl group. A phosphate group is not a part of the basic amino - acid structure. The R group varies among different amino acids, giving each its unique properties.