How is most of the carbon dioxide in the body transported?
A) Dissolved in plasma
B) Bound to hemoglobin to form carbaminohemoglobin
C) Carried in the form of bicarbonate ions
D) In the form of carbonic acid

Question

Quizplus · Accepted Answer

Most of the carbon dioxide in the body is transported in the form of bicarbonate ions. When carbon dioxide enters red blood cells, it reacts with water to form carbonic acid. Carbonic acid then dissociates into hydrogen ions and bicarbonate ions. The bicarbonate ions are transported out of the red blood cell and into the plasma, where they are carried to the lungs for exhalation.

How Is Most of the Carbon Dioxide in the Body