Question

what must happen to amino acids before they can be used in catabolic reactions? multiple choice they must be dehydrogenated they must be deoxygenated they must be deaminated they must be decarboxylated

Explanation:

Amino acids contain an amino - group. Before they can enter catabolic pathways to be broken down for energy or other purposes, the amino - group needs to be removed. This process is called deamination. Dehydrogenation involves the removal of hydrogen, deoxygenation involves the removal of oxygen, and decarboxylation involves the removal of a carboxyl group. None of these are the key step for amino acids to enter catabolic reactions like deamination is.

Answer:

They must be deaminated