In an alkaline medium, glycine predominantly exists in a

Options

(a) cation
(b) anion
(c) zwitter ion
(d) covalent form

Correct Answer:

anion

Explanation:

In alkaline medium (high pH) amino acids exists as negatively charged particles (carboxyl group donates protons). H₂N – CH₂ – COOH → H₂N – CH₂ – COO⁻.