Question

What is true about RBCs in human?

• A. They transport $99.5\%$ of $O_2$
• B. They transport $80\%$ oxygen, the rest $20\%$ being transported by plasma
• C. They do not carry $C{O}_2$ at all
• D. They carry $20-25\%$ of $C{O}_2$

Answer 1

The correct option is D They carry $20-25\%$ of $C{O}_2$

The correct answer is D

Nearly 20 to 25% Carbon dioxide is transported by RBC in the form of carbaminohemoglobin ;70% is carried as bicarbonates and 7% in the dissolved form in the plasma.