Neco 2025 Biology Question 27
Practice objective / multiple choice question 27 from the 2025 Neco Biology examination.
At sea level the barometric pressure is \(760\) mmHg. The inspired fraction of oxygen is \(0.21\), water vapour pressure in the alveoli is \(47\) mmHg, arterial \(P_{CO_2}\) is \(40\) mmHg and the respiratory quotient is \(0.8\). (i) Calculate the alveolar \(P_{O_2}\) using the alveolar gas equation. (ii) If the subject ascends to an altitude where the barometric pressure falls to \(600\) mmHg, with all other variables unchanged, what is the decrease in alveolar \(P_{O_2}\) (in mmHg)?
Answer Options
About This Question
This is Neco 2025 Biology Question 27. It is one of the objective questions from the 2025 Neco Biology examination.
Difficulty level: Medium .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.