Amino group on an amino acid is what?

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Multiple Choice

Amino group on an amino acid is what?

Explanation:
Amino acids carry a basic amino group that is protonated in solution. In physiological conditions, this amine is present as NH3+, giving the zwitterion form with the carboxyl group typically deprotonated (COO−). So the amino group is NH3. The other groups listed correspond to differentFunctional groups (COOH is the carboxyl group, SH is a thiol, CH3 is a methyl group) and aren’t the amine portion of an amino acid.

Amino acids carry a basic amino group that is protonated in solution. In physiological conditions, this amine is present as NH3+, giving the zwitterion form with the carboxyl group typically deprotonated (COO−). So the amino group is NH3. The other groups listed correspond to differentFunctional groups (COOH is the carboxyl group, SH is a thiol, CH3 is a methyl group) and aren’t the amine portion of an amino acid.

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