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Question

The majority of carbon dioxide produced by our body cells is transported to the lungs as

A
attached to haemoglobin
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B
dissolved in blood
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C
as bicarbonates
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D
as carbonates
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Solution

The correct option is C as bicarbonates
Carbon dioxide is transported through the blood in three forms:
- 70% as bicarbonate
- 20-25% by RBCs
- About 7% as dissolved in the blood plasma

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