15. Do the amine and the
carboxyl groups attached to
central carbons participate in
the union between amino
acids?

Gap-fill exercise

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. The of the amine group of
one amino acid binds to the carbon of
the carboxyl group of the other amino
acid. The molecule liberated from
the formation of the bond thus
has a hydrogen from the amine and an
oxygen and another from the
carboxyl.