The conversion of HbO₂ to deoxygenated Hb does which of the following?
1) Decreases blood carbon dioxide content.
2) Enhances carbon dioxide loading on Hb.
3) Helps buffer H⁺ ions.

Question

The conversion of HbO₂ to deoxygenated Hb does which of the following? 1) Decreases blood carbon dioxide content. 2) Enhances carbon dioxide loading on Hb. 3) Helps buffer H⁺ ions.

Quizplus · Accepted Answer

2) The conversion of oxyhemoglobin to deoxyhemoglobin enhances carbon dioxide loading on hemoglobin because deoxyhemoglobin has a higher affinity for CO2 than oxyhemoglobin. This is part of the Haldane effect, where the binding of oxygen with hemoglobin tends to displace carbon dioxide from blood, and the release of oxygen facilitates the uptake of carbon dioxide. 3) Hemoglobin also helps in buffering hydrogen ions (H+), which are produced during the conversion of carbon dioxide (CO2) into bicarbonate (HCO3-) in red blood cells. This buffering action helps maintain blood pH.

The Conversion of HbO2 to Deoxygenated Hb Does Which of the Following

The Conversion of HbO₂ to Deoxygenated Hb Does Which of the Following