A) bicarbonate in blood plasma and RBCs
B) free \[C{{O}_{2}}\] in blood plasma
C) 70% carbamino-haemoglobin and 30% as bicarbonate
D) carbamino-haemoglobin in RBCs
Correct Answer: A
Solution :
70-75% of \[C{{O}_{2}}\] is transported as sodium bicarbonate \[(NaHC{{O}_{3}})\] by plasma, and as potassium bicarbonate \[(KHC{{O}_{3}})\] by RBCs.
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