At neutral pH,the net charge of serine is
A)positive.
B)negative.
C)zero.
D)None of the above.

Question

Quizplus · Accepted Answer

At neutral pH (pH=7), the amino acid serine has a pKa value of approximately 13.9 for its side chain OH group and a pKa value of approximately 2.2 for its alpha carboxylic acid group. This means that at neutral pH, the side chain OH and the alpha carboxylic acid group are both deprotonated, resulting in a net charge of zero on serine.

At Neutral PH,the Net Charge of Serine Is