Which of the Following Mechanisms Explains How Carbon Dioxide Affects

question 23

Multiple Choice

Which of the following mechanisms explains how carbon dioxide affects O₂ binding to Hb?

• A)by directly binding to heme-Fe in the oxygen binding site
• B)by forming iron carbonate with the heme-iron
• C)by forming HCO₃-,which combines with H⁺ to increase CO₂ binding
• D)by forming H⁺ + HCO₃-,where the H⁺ is an antagonist to oxygen binding to Hb

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