The two amino acids having R groups with a negative net charge at pH 7.0 are
A Aspartate and glutamate
B Arginine and histidine
C Cysteine and methionine
D Proline and valine
Answer:A
The two amino acids having R groups with a negative net charge at pH 7.0 are
A Aspartate and glutamate B Arginine and histidine C Cysteine and methionine D Proline and valine