Question

Human blood has a pH of 7.4. How do buffers in the blood affect the pH?

A. Buffers are acids that cause the pH of blood to decrease.
B. Buffers are bases that cause the pH of blood to increase.
C. Buffers prevent small amounts of acid or base from changing the pH of blood.
D. Buffers are catalysts that prevent chemical reactions from changing the pH of blood.

Answer 1

Answer:

D is the right answer.....

Answer 2

The answer is D.
Because Buffers do prevent chemical reactions from the changing of blood.