Question

which of the following parts of an amino acid vary among different amino acids? view available hint(s) the phosphate group the side chain, or r group the carboxyl group the hydrogen on the central carbon the amino group

Explanation:

All amino - acids have a central carbon bonded to an amino group, a carboxyl group, a hydrogen atom, and a side - chain (R group). The amino group, carboxyl group, hydrogen on the central carbon are common features. The R group is what varies among different amino acids, giving each its unique properties. Amino acids do not have phosphate groups as part of their basic structure.

Answer:

B. The side chain, or R group