Gce Model Questions Vol1 2022 Biology Question 38
Practice objective / multiple choice question 38 from the 2022 Gce Model Questions Vol1 Biology examination.
The diagram shows the main parts of the human respiratory system. Using the diagram, identify the structure that provides the greatest surface area for gas exchange. Then, assuming each alveolus has a surface area of 0.1 mm² and there are 300 million alveoli, calculate the total diffusion capacity for O₂ using Fick's law \(\dot V_{O2}=\frac{D A\,\Delta P}{T}\). Take the diffusion coefficient \(D = 1.8\times10^{-5}\,\text{cm}^2\,\text{s}^{-1}\), membrane thickness \(T = 5\times10^{-5}\,\text{cm}\), and a partial pressure difference \(\Delta P = 100\,\text{mmHg}\). Express the result in millilitres of O₂ per minute (1 cm³ = 1 mL).
Answer Options
About This Question
This is Gce Model Questions Vol1 2022 Biology Question 38. It is one of the objective questions from the 2022 Gce Model Questions Vol1 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.