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NEET Biology Breathing and Exchange of gases (Animal Respiration) Question Bank Self Evaluation Test - Breathing and Exchange of Gases

  • question_answer
    At rest, most people require an alveolar ventilation for about 4 L/minute. Suppose an emphysema victim with a tidal volume of 0.5 L has suffered alveolar damage that has produced a respiratory dead space of 0.3 L, what will be that person's frequency of breathing at rest?

    A) 5 breaths/min    

    B)                    8 breaths/min

    C) 20 breaths/min   

    D)                    50 breaths/min

    Correct Answer: C

    Solution :

    [c] \[f=\frac{A}{T-D}=\frac{4000ml/\min }{500ml-300ml}\] \[\frac{4000}{200}=20breaths/min\]


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