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Q CO2 is primarily transported in the arterial blood as: [UP 08, Comed 07, AI 05]
A. Dissolved CO2
B. Carbonic acid
C. Carbaminohemoglobin
D. Bicarbonate

Explanation
Correct Answer:-
D. Bicarbonate
(Ref. Ganong’s Physiology 24th edn. pp 612)

About 68-70% CO2 transported as HCO3–
form.