Igcse Model Questions Vol1 2023 Biology Question 2
Practice objective / multiple choice question 2 from the 2023 Igcse Model Questions Vol1 Biology examination.
A person at sea level (atmospheric pressure 760 mm Hg) breathes a tidal volume of 500 mL at a rate of 12 breaths per minute. Anatomical dead space is 150 mL. The fraction of inspired oxygen is 0.21 and the water vapour pressure in the alveoli is 47 mm Hg. The metabolic carbon dioxide production is 200 mL min⁻¹ (STP). Using the conversion factor K = 0.863 and a respiratory quotient R = 0.8, calculate the alveolar partial pressure of oxygen \(P_{AO2}\) (in mm Hg).
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This is Igcse Model Questions Vol1 2023 Biology Question 2. It is one of the objective questions from the 2023 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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