Punjab Medical Punjab - MET Solved Paper-2005

  • question_answer
    Although much \[C{{O}_{2}}\] is carried in blood, yet blood does not become acidic because:

    A)  \[C{{O}_{2}}\] is continuously diffused through the tissues and is not allowed to accumulate

    B)  \[C{{O}_{2}}\] combines with water to form \[{{H}_{2}}C{{O}_{3}}\] which is neutralized by \[N{{a}_{2}}C{{O}_{3}}\]

    C)  in \[C{{O}_{2}}\] transport, blood buffers play an important role

    D)  \[C{{O}_{2}}\] is absorbed by leucocytes

    Correct Answer: C

    Solution :

    Blood does not become acidic due to buffering action. Bicarbonates acts as buffering agents. \[{{H}_{2}}O+C{{O}_{2}}{{H}_{2}}C{{O}_{3}}{{H}^{+}}+HCO_{3}^{-}\]


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