Most CO₂ is Transported in the Blood

Question

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.

Accepted Answer

Most CO₂ is transported in the blood as bicarbonate, a process known as the bicarbonate buffer system. This process helps to maintain the pH of the blood within a normal range.