Q. The majority of carbon dioxide produced by our body cells is transported to the lungs :
A) dissolved in the blood
B) as bicarbonates
C) as carbonates
D) attached to haemoglobin
Explanation
[Solution from source] About 70% of CO₂ is carried in plasma as bicarbonate ions, formed with carbonic anhydrase in RBCs. About 20–25% travels bound to haemoglobin and around 7% dissolved. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.