Which of the following chemicals is produced by the kidney? A. angiotensinogen B. bicarbonate ions C. sodium ions D. vitamin C
Option B. Bicarbonate ions are produced by the kidney. CO2 and H2O react to form carbonic acid which dis- sociates into hydronium ions and bicarbonate ions. The bicarbonate ions are transported to the blood at the same time as the hydronium is excreted in acidic urine.
