Gamma amino butyric acid (GABA) is a
Neurotransmitter
Mediator of allergic reactions
Thyroid hormone
Proline differs from other amino acids in that it has a
Primary amino group
Secondary amino group
Tertiary amino group
A peptide bond is composed of
A carboxylic acid and amino group
A carbonyl and an amino group
Hydroxyl and an amino group
A buffer is a solution that resists change following the addition of an acid or a base
