MCAT Question A Day - 6/18/13
When carbon dioxide diffuses from tissue cells to the blood, it combines with water to form carbonic acid. Then, the enzyme carbonic anhydrase causes the ionization of carbonic acid into H1 and HCO32. This suggests that in active tissues, pH will tend to
A. decrease.
B. increase.
C. remain the same.
D. first increase and then decrease.
