Approximately seventy percent of carbon-dioxide absorbed by the blood will be transported to the lungs

Question

Approximately seventy percent of carbon-dioxide absorbed by the blood will be transported to the lungs (A) as bicarbonate ions (B) in the form of dissolved gas molecules (C) by binding to R.B.C (D) as carbamino - haemoglobin.

Tardigrade Admin · Accepted Answer

About 70% of CO., (about 2.5ml per 100 ml. of blood), received by blood from the tissues, enters the RBCs where it reacts with water to form carbonic acid (H2C03). Carbonic anhydrase, exclusively found in RBCs, speeds up the formation of HC03 and rapidly converts it back to carbon dioxide and water when blood reaches the lungs. Almost as rapidly as formed, all carbonic acid of RBCs dissociates into hydrogen (IT) and bicarbonate ions (HCO3).

Q. Approximately seventy percent of carbon-dioxide absorbed by the blood will be transported to the lungs

as bicarbonate ions

in the form of dissolved gas molecules

by binding to R.B.C

as carbamino - haemoglobin.