Which of the following forms of the amino acid alanine (Ala) is the zwitterion form of this amino acid?

Question

Quizplus · Accepted Answer

The zwitterion form of alanine has a neutral charge, which means that the number of positive and negative charges is equal. In choice B, the amino group (NH3+) and carboxyl group (COO-) are both present, giving a neutral charge. In choices A, C, and D, either the amino group or the carboxyl group is missing, leading to a net positive or negative charge.

Which of the Following Forms of the Amino Acid Alanine