Short / long answer type questions.
A large percentage of carbon dioxide forms carbonic acid within the RBCs whereas very little carbon dioxide forms carbonic acid in the plasma. Why?

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Solution

Only a small percentage (3-5 percent) of carbon dioxide travels dissolved in plasma because of its low solubility.
A major portion (70-75 percent) of C02 is transported as Carbonic acid due to the presence of highly catalyzing enzyme Carbonic acid.

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