Neco Model Questions Vol1 2020 Biology Question 46
Practice objective / multiple choice question 46 from the 2020 Neco Model Questions Vol1 Biology examination.
The diagram shows a cross‑section of an alveolus. The partial pressure of oxygen in the alveolar air is \(100\ \text{mmHg}\) and in the pulmonary capillary blood is \(40\ \text{mmHg}\). The partial pressure of carbon dioxide in the alveolar air is \(40\ \text{mmHg}\) and in the blood is \(45\ \text{mmHg}\). The ventilation rate is \(5\ \text{L min}^{-1}\) and the fraction of oxygen in inhaled air is 0.21. (a) State the direction of diffusion for oxygen and carbon dioxide. (b) Assuming all oxygen that enters the alveolus is taken up by the blood, calculate the amount of oxygen transferred to the blood each minute in millimoles (use \(1\ \text{L O}_2\) at STP = \(44.6\ \text{mmol}\)).
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This is Neco Model Questions Vol1 2020 Biology Question 46. It is one of the objective questions from the 2020 Neco Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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