How much CO $_{2}$ is transported as bicarbonates of sodium and potassium in the blood in mammals?

5 - 10 %

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10 - 90 %

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70 - 72 %

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90 - 95 %

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Solution

The correct option is C 70 - 72 %
About 7% of carbon dioxide is carried in the solution in plasma as carbonic acid. 20 - 25% carbon dioxide is carried as carbamino-haemoglobin and about 70% is carried in the plasma and RBC as bicarbonates of sodium and potassium.

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Blood carries $C O_{2}$ in three forms. The correct percentages of $C O_{2}$ transported in these forms are

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