At a specific pH known as the isoelectric point, an amino acid exists as a zwitterion. Which functional groups carry the charges in this state?
Q1. At a specific pH known as the isoelectric point, an amino acid exists as a zwitterion. Which functional groups carry the charges in this state?
Answer: COO- and NH3+
Explanation: The carboxyl group loses a proton and the amino group gains one; COO+ is chemically impossible and a common distractor.