Neco 2021 Biology Question 16
Practice objective / multiple choice question 16 from the 2021 Neco Biology examination.
Using the labelled diagram of the human respiratory system, note that the alveolar partial pressure of oxygen ( \(P_{A\text{O2}}\) ) is 100 mmHg while atmospheric \(P_{O2}\) is 160 mmHg. If emphysema reduces the effective alveolar surface area by 30% but the diffusion gradient remains unchanged, estimate the percentage increase in breathing rate required to keep the total oxygen uptake unchanged, assuming oxygen uptake is directly proportional to surface area and ventilation rate.
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About This Question
This is Neco 2021 Biology Question 16. It is one of the objective questions from the 2021 Neco Biology examination.
Difficulty level: Medium .
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