CBSE Class 10 Answered

Very small amount of carbon dioxide is transported in a dissolved state, dissolved in plasma. Majority of the CO2 is transported in the form of bicarbonate. Carbon dioxide is converted to bicarbonate and hydrogen ions through the action of RBC carbonic anhydrase. Still some CO2 is transported as Carbaminohemoglobin. This is formed when carbon dioxide reacts with hemoglobin and other proteins to form carbamino compounds. The remaining carbon dioxide is transported through the blood in the form of bicarbonate ions.