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Answer to Question #68340 in Other Biology for hammad

Question #68340
why is the higherpercentage of CO2 transported by water of RBCsas compared to water of plasma?Also give the equation of this process.
Expert's answer
As СO2 diffuses from the tissues into the blood, most of it is taken up by the RBCs', while some of it remains dissolved in the plasma. In the RBCs' an enzyme known as Carbonic anhydrase acts upon the CO2 and H2O molecule to give H2CO3 and H+. H2CO3 formed diffuses into the plasma acting as a pH buffer and the H+ binds to the hemoglobin for the release of O2 into the tissues. Therefore, simple answer would be; the higher concentration of CO2 in the RBCs' is required for the buffering of blood plasma and release of O2 to tissues.
The formation of H2CO3 is reversible but because of the high concentration of CO2 it proceeds forward, that is why if there is a high concentration of O2 in the blood, it leads to oxygen toxicity because it can’t be released into the tissues because of lack of H+ formed by conversion of CO2 leading to oxidation.
Hb + CO2 = Hb · CO2 (Carbaminohemoglobin)

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