Which of the following buffer systems of the body is affected by the action of the lungs? A. protein B. monohydrogen-phosphate/dihydrogen-phosphate C. ammonia/ammonium D. carbonic acid/bicarbonate
Option D. Exhaled CO 2 comes from the disassociation of the carbonic acid molecule which in turn form when a hydronium ion (acid) combines with a bicarbonate ion. Hence, exhaling CO 2 reduces the quantity of acid withinside the blood.
