Most of the carbon dioxide in the blood is transported
A)dissolved in the plasmA.
B)as carbaminohemoglobin.
C)as bicarbonate ions in the plasma.
D)All apply.

Question

Quizplus · Accepted Answer

Most of the carbon dioxide in the blood is transported as bicarbonate ions in the plasma. About 70% of CO2 is converted to bicarbonate ions by the enzyme carbonic anhydrase in the red blood cells. The bicarbonate ions are then transported in the plasma to the lungs where they are converted back to CO2 and exhaled.

Most of the Carbon Dioxide in the Blood Is Transported