Amino Acids Without Ionizable R-Groups Can Act as a Zwitterion

Question

Amino acids without ionizable R-groups can act as a zwitterion in a(n) _____ solution.
A) nonpolar
B) boiling
C) acidic
D) basic
E) neutral

Accepted Answer

Amino acids without ionizable R-groups are considered neutral and have both a positively charged amino group and a negatively charged carboxyl group. In a neutral solution, these groups balance out and the amino acid acts as a zwitterion.