Most carbon dioxide is transported in the blood
A)in the form of bicarbonate ions.
B)bound to hemoglobin.
C)dissolved in the plasma.
D)by the leukocytes.
E)in the form of carbonic acid.

Question

Quizplus · Accepted Answer

Most of the carbon dioxide in the blood is transported in the form of bicarbonate ions, which are formed when carbon dioxide combines with water in the presence of carbonic anhydrase enzyme. This bicarbonate ion is then transported from the tissues to the lungs where it is converted back to CO2 for elimination.

Most Carbon Dioxide Is Transported in the Blood