Question 4 What are the major transport mechanisms for CO2? Explain.
Class - XI - Biology Chapter Breathing and Exchange of Gases Page No. 277
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About 70% of carbon dioxide is transported as sodium bicarbonate .As co2 diffuses into blood plasma, a large part of it combines with water to form carbonic acid in the presence of enzyme carbonic anhydrase. This carbonic acid dissociates into bicarbonate and hydrogen ions
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Answer:At the tissue sight where partial pressure of CO2 is high due to catabolism.CO2 diffuses in blood and forms HCO3- and H+ .
Every 100ml of deoxygenated blood delivers approximately 4ml of CO2 to the alveoli.
Explanation:
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