Which of the following statements are true of CO₂?
I.Most CO₂ diffusing into the blood from tissue cells enters the erythrocyte.
II.The rate of reaction between CO₂ and H₂O in the RBC is quite slow.
III.The amount of CO₂ carried as H₂CO₃ in the RBC is quite small.
IV.The rate of reaction between CO₂ and H₂O in the RBC is quite fast.

Question

Quizplus · Accepted Answer

The reaction between CO₂ and H₂O occurs approximately 13,000 times faster in the erythrocyte than in the plasma because of the intracellular enzyme carbonic anhydrase. Thus, when CO₂ enters the RBC, it is instantly converted into H₂CO₃ and its products, bicarbonate and H?. An extremely small amount remains dissolved in the erythrocyte fluid.

Which of the Following Statements Are True of CO2

Which of the Following Statements Are True of CO₂