Bulk of carbon dioxide (CO_2) released from body tissues into the blood is present as

NEET Biology question

Bulk of carbon dioxide (CO) released from body tissues into the blood is present as

(A)Bicarbonate in blood plasma and RBCsCorrect
(B)Free CO in blood plasma
(C)70% carbamino-haemoglobin and 30% as bicarbonate
(D)Carbamino-haemoglobin in RBCs

Answer: (A)

Solution

The bulk of CO (about 70%) is carried as bicarbonate, formed within RBCs and then largely diffused into and carried in the plasma, so the combined description "bicarbonate in

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Question ID VK-119239