Igcse Model Questions Vol1 2023 Biology Question 27
Practice objective / multiple choice question 27 from the 2023 Igcse Model Questions Vol1 Biology examination.
The diagram of the human respiratory system shows an alveolus labelled \(A\), a bronchiole labelled \(B\) and a capillary labelled \(C\). Each alveolus is approximately spherical with a radius of \(0.1\;\text{mm}\). The lungs contain about \(3.0\times10^{8}\) alveoli. Only 80% of the internal surface of each alveolus is available for gas exchange because the remaining 20% is occupied by structural tissue. Using the information from the diagram, calculate the total effective surface area for gas exchange in the lungs, giving your answer in square metres (m\(^2\)).
Answer Options
About This Question
This is Igcse Model Questions Vol1 2023 Biology Question 27. It is one of the objective questions from the 2023 Igcse 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.