Question

Proteins may act as buffers because the free carboxyl group can release hydrogen ions.

A) The free carboxyl group can combine with hydrogen ions.
B) The free carboxyl group can act as a base.
C) The free amino group can release hydrogen ions.
D) The free amino group can act as an acid.

Answer 1

The answer is A.

Answer 2

Answer: a. The free carboxyl group can combine with hydrogen ions.

Step-by-step explanation:

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