Q. Which one of the following compounds can exists in Zwitter ionic form?

 1800  225 AMUAMU 2016Biomolecules Report Error

Solution:

Amino acids contain amino and carboxyl as functional groups. In aqueous solution, the carboxyl group can lose a proton and amino group can accept a proton, giving rise to a dipolar ion known as Zwitter ion. This is neutral but contains both negative and positive charges.