RAJASTHAN PMT Rajasthan - PMT Solved Paper-2003

  • question_answer
    Blood carries \[C{{O}_{2}}\] mainly in which form?

    A)  \[Hb.C{{O}_{2}}\]

    B)  \[NaHC{{O}_{3}}\]

    C)  carbonic acid      

    D)                \[Hb.C{{O}_{2}}\] and carbon monoxide

    Correct Answer: B

    Solution :

    About 70% of \[C{{O}_{2}}\] that enters RBCs, combines with water to form carbonic acid. The latter dissociates into bicarbonate and hydrogen ions. The bicarbonate ions combine with Na+/K+ to form bicarbonates.


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