Which of the following statements most correctly defines the
isoelectric point?

Options

A. The pH at which all molecular species are ionized and that carry the same charge
B. The pH at which all molecular species are neutral and uncharged
C. The pH at which half molecular species are ionised (charged) and other half unionised
D. The pH at which negataively and positively charged molecular species in equal concentration

Answer

D

Explanation

The pH at which amino acid does not move towards anode (or) cathode.