Most CO₂ is transported in the blood
A)by the hemoglobin,as carbaminohemoglobin.
B)by megakaryocytes.
C)loosely bound to the iron molecule in heme.
D)as bicarbonate.

Question

Quizplus · Accepted Answer

Carbon dioxide is primarily transported in the blood as bicarbonate ions. This process involves the enzyme carbonic anhydrase within red blood cells, which catalyzes the reaction between CO₂ and water to form carbonic acid. Carbonic acid then dissociates to form bicarbonate ions and hydrogen ions. The majority of the bicarbonate ions will diffuse out of the red blood cells and into plasma, where they will be transported to the lungs for elimination as CO₂.

Most CO₂ Is Transported in the Blood