Question

The α - amino acids, usually exist in the form of zwitter ions. It means they have:

• A. No acidic or basic group
• B. Basic group - COO^- and acidic group NH₄⁺
• C. Basic group -COO^- and acidic group - NH₃⁺
• D. Basic group - COO^- and acidic group - COO^2-

Answer 1

The correct option is C

Basic group -COO^- and acidic group - NH₃⁺

This is the simplest α -amino acid glycine and this shows the formation of a zwitter ion.

We can clearly see that the zwitter ion has one basic group - COO^- and one acidic group - NH₃⁺