Respuesta :

brookecstoner

Answer:

R group

Explanation:

All amino acids have both an amino group and a carboxyl group. The R-group (sometimes called the variable group) is what differentiates amino acids from one another. These R-groups have various structural properties that dictate the function of the resulting amino acid chain.

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Side chain- because the unique chemical structure attached to the backbone of each amino acid that differentiates one amino from another