Neco Model Questions Vol1 2024 Biology Question 44
Practice objective / multiple choice question 44 from the 2024 Neco Model Questions Vol1 Biology examination.
At sea level the barometric pressure is \(760\ \text{mmHg}\). The water vapour pressure in the alveoli is \(47\ \text{mmHg}\) and the fraction of inspired oxygen is \(0.21\). If the arterial \(P_{CO_2}\) is \(40\ \text{mmHg}\) and the respiratory quotient \(R\) is \(0.8\), use the alveolar gas equation \(P_{A\!O_2}=F_{iO_2}(P_{B}-P_{H_2O})-\frac{P_{aCO_2}}{R}\) to calculate the alveolar \(P_{O_2}\). Assuming a linear relationship in which an alveolar \(P_{O_2}\) of \(100\ \text{mmHg}\) corresponds to an arterial oxygen saturation of \(95\%\), estimate the expected arterial oxygen saturation.
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This is Neco Model Questions Vol1 2024 Biology Question 44. It is one of the objective questions from the 2024 Neco Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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