Question

Majority of $C{O}_2$ produced by our body cells is transported to lungs

• A. Attached to haemoglobin
• B. Dissolved in blood
• C. As bicarbonates
• D. As carbonates

Answer 1

The correct option is C As bicarbonates

Solution: When systemic arterial blood flows through capillaries, Carbon dioxide diffuses from the tissues into the blood. There are three ways in which CO2 from tissue is transported to lungs: dissolving in blood, attaching with haemoglobin (carbaminohaemoglobin) and forming bicarbonate and hydrogen ions. Most of the CO2 are transported in the form of bicarbonate.

So the correct answer is "As bicarbonates".