Question

In which of the following form/way approximately seventy percent of carbon dioxide absorbed by the blood will be transported to the lungs?

Options

• Bicarbonate ions

• Carbamino-haemoglobin

• By binding of RBC.

• In the form of dissolved gas molecules

Answer 1

Bicarbonate ions

Explanation:

70% of CO₂ is transferred in the form of CO₂. Due to the presence of carbonic acid, bicarbonate ions are formed.  RBCs include the anhydrase enzyme.