Sodium ions are reabsorbed into the body by the aid of what catalyst?
A) Aldosterone
B) Sodium bicarbonate
C) Angiotensin
D) Carbonic anhydrase
D
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Carbonic anhydrase, an enzyme, speeds the process of carbon dioxide and water combining to form carbonic acid. The carbonic acid immediately dissociates to form sodium bicarbonate, using a sodium ion from the renal tubule and a free hydrogen ion (an acid). The other options are not correct.
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