In a man, the percentage of CO $_{2}$ transported as bicarbonates is _______.

5% to 10%

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70% to 75%

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90% to 95%

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50% to 65%

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Solution

The correct option is B 70% to 75%
During respiration, the carbon dioxide transported as a waste product from the tissues to the blood is transported either as dissolved gas, bicarbonate, and as carbamino compounds. With the red blood corpuscles, carbonic anhydrase plays a major role in the mechanism, around 70% of carbon dioxide is transported as bicarbonates.
So, the correct answer is option B.

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