Answer :
Final answer:
Amino acids are the building blocks of proteins, and the R group is the feature that makes each amino acid unique.
Explanation:
Amino acids are the monomers that make up proteins. Each amino acid consists of a central carbon atom bonded to an amino group, a carboxyl group, a hydrogen atom, and a unique R group. The R group is what makes each amino acid distinct and contributes to the diversity of proteins.
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