Waec Model Questions Vol1 2025 Biology Question 46
Practice objective / multiple choice question 46 from the 2025 Waec Model Questions Vol1 Biology examination.
The diffusion capacity of a respiratory surface is proportional to its surface area divided by the diffusion distance. Fish gills have a surface area of 3.0 cm² and a diffusion distance of 0.02 mm. Mammalian lungs have a surface area of 70 m² and a diffusion distance of 0.0005 mm. By what factor does the diffusion capacity of mammalian lungs exceed that of fish gills? Express your answer in scientific notation to two significant figures.
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This is Waec Model Questions Vol1 2025 Biology Question 46. It is one of the objective questions from the 2025 Waec Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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