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Q. How much percentage of $CO_2$ is carried by haemoglobin as carbamino-haemoglobin?

Breathing and Exchange of Gases

Solution:

Nearly 20-25 per cent of $CO_2$ is transported by RBCs whereas 70 per cent of it is carried as bicarbonate (Sodium bicarbonate). About 7 per cent of $CO_2$ is carried in a dissolved state through plasma.