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Question

Most of the carbon dioxide in blood is transported as

A
carbamino-haemoglobin
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B
carbamino-protein
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C
bicarbonate
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D
dissolved carbon-dioxide
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Solution

The correct option is C bicarbonate
Nearly 70 percent of carbon dioxide is transported as bicarbonate in the blood with the help of an enzyme carbonic anhydrase.
20-25 percent of carbon dioxide is transported by haemoglobin in RBCs as carbamino-haemoglobin.
Some amount of carbon dioxide is also carried in a dissolved state through plasma.

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