Question

Amino acids are named after two of their functional groups: the amino group (NH2), which acts like a base, and the carboxyl group (COOH), which acts like an acid. A third functional group, often called the R group, varies among the different types of amino acids. In alanine, the R group is a methyl group (CH3). In serine, the R group is a methyl alcohol (-CH2OH).

Answer 1

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