What percentage of $C O_{2}$ is transported as bicarbonate $(H C O_{3})$ ?

70 %

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7 %

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20 - 25 %

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97 %

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Solution

The correct option is A $70 %$
Nearly 20-25% of carbon dioxide is transported by RBCs whereas 70% of it is carried as bicarbonate. About 7% of carbon dioxide is carried in a dissolved state through plasma.
So, the correct answer is '70%'

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

C O_{2}

C O_{2}

H b C O_{2}

_{2}

How much of $C O_{2}$ is transported in blood by bicarbonate form?

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