Q. What is true about RBCs in humans?
A) They carry about 20-25 per cent of carbon dioxide
B) They transport 99.5 per cent of oxygen
C) They transport about 80 per cent oxygen only and the rest 20 per cent of it is transported in dissolved state in blood plasma
D) They do not carry carbon dioxide at all
Explanation
Nearly 20-25% of carbon dioxide is transported by RBCs. It is carried by haemoglobin as carbamino haemoglobin. 70% of carbon dioxide is carried as bicarbonates. About 97% of oxygen is transported by RBCs in the blood. The remaining 3% of oxygen is carried in dissolved state through the plasma.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.