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NEET Biology NEET PYQ-Digestion and Absorption

  • question_answer
    When \[\text{C}{{\text{O}}_{\text{2}}}\]concentration in blood increases, breathing becomes: [AIPMT (S) 2004]

    A) shallower and slow

    B) there is no effect on breathing

    C) slow and deep

    D) faster and deeper

    Correct Answer: D

    Solution :

    [D] When CO2 concentration in blood increases breathing becomes faster and deeper. The effect of increased CO2 is to decrease the affinity of haemoglobin for O2. Thus due to Bohr's effect the CO2 released in respiring tissue accelerates the delivery of oxygen by faster and deeper breathing.


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