Multiple Choice
Under physiological conditions, amino acids in solution carry
A) no electrical charges.
B) a net positive charge, due to an −NH 3 + group or groups.
C) a net negative charge, due to a −COO − group or groups.
D) both −NH 2 and −COOH groups.
E) both −NH 3 + and −COO − groups.
Correct Answer:

Verified
Correct Answer:
Verified
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