About 70% of carbon dioxide is transported in deoxygenated blood
A)as dissolved CO2 in the blood plasma.
B)as bicarbonate ions bound to hemoglobin in red blood cells.
C)combined with hemoglobin as carbaminohemoglobin.
D)as bicarbonate ions in the blood plasma.
E)as carbonic acid in the red blood cells.

Question

Quizplus · Accepted Answer

About 70% of carbon dioxide is transported in deoxygenated blood as bicarbonate ions in the blood plasma. This process is facilitated by the enzyme carbonic anhydrase, which converts CO2 into HCO3- (bicarbonate ion) and H+ ions. The bicarbonate ions then diffuse into the plasma and are transported to the lungs for elimination.

About 70% of Carbon Dioxide Is Transported in Deoxygenated Blood