Igcse Model Questions Vol1 2020 Biology Question 6

Practice objective / multiple choice question 6 from the 2020 Igcse Model Questions Vol1 Biology examination.

Igcse Model Questions Vol1 2020 Biology Objective / Multiple Choice Medium Difficulty
Question 6 IGCSE_MODEL_QUESTIONS_VOL1 • 2020 • BIOLOGY • objective
Igcse Model Questions Vol1 2020 Biology Question 6 diagram

The diagram of the human respiratory system shows that the lungs contain about 480 million alveoli, each of which can be approximated as a sphere of radius \(0.1\) mm. Estimate the total internal surface area of all alveoli that is available for gas exchange. Give your answer in square metres, correct to two significant figures.

Answer Options

Correct Answer A. 6.0×10^1 m^2
B. 4.8×10^1 m^2
C. 7.2×10^1 m^2
D. 5.0×10^1 m^2
Correct Answer
A
Correct Option:
6.0×10^1 m^2

About This Question

This is Igcse Model Questions Vol1 2020 Biology Question 6. It is one of the objective questions from the 2020 Igcse Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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