Igcse Model Questions Vol1 2021 Biology Question 33
Practice objective / multiple choice question 33 from the 2021 Igcse Model Questions Vol1 Biology examination.
The diagram shows the human respiratory system. Air enters through the nasal cavity and reaches the alveoli where gas exchange occurs. If the partial pressure of \(O_2\) in alveolar air is 100 mmHg and in the surrounding capillary blood is 40 mmHg, while the partial pressure of \(CO_2\) in alveolar air is 40 mmHg and in capillary blood is 46 mmHg, calculate the ratio of the diffusion driving force for \(O_2\) to that for \(CO_2\). (The diffusion driving force is the difference in partial pressures.)
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This is Igcse Model Questions Vol1 2021 Biology Question 33. It is one of the objective questions from the 2021 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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