Question

Explain the following for an amino acid: (5)

i) Zwitterionic nature

ii) Isoelectric point

Answer 1

The correct answer is;Zwitterionic nature of an amino acid is when an amino acid contains both a plus and a minus charge in the "backbone" and has an overall neutral charge.It exists at a pH equal to the isoelectric point.The isoelectric point of an amino acid is the pH at which the amino acid has a neutral charge