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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
    Because of the relatively high altitude of Antonito, Colorado, the town has a normal barometric pressure of about 600 mm He rather than 760 mm Hg as at sea level. The partial pressure of oxygen in Antonito's air is approximately:             

    A) 75 mmHg      

    B)                    126 mmHg

    C) 160 mm Hg     

    D)                    760 mm Hg

    Correct Answer: B

    Solution :

    [b] Air at sea level with an atmospheric pressure of 700 mm Hg has a partial pressure of oxygen of 160 mm Hg (700 x 21). Therefore, the partial pressure of \[{{O}_{2}}\] at Antonito, Colorado, is 600 x 21 = 126 mm Hg.


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