Igcse Model Questions Vol1 2021 Biology Question 6
Practice objective / multiple choice question 6 from the 2021 Igcse Model Questions Vol1 Biology examination.
Capillary type A is a cylindrical tube \(1.0\ \text{mm}\) long with an internal radius of \(5\ \mu\text{m}\). Capillary type B is \(2.0\ \text{mm}\) long with an internal radius of \(3\ \mu\text{m}\). Assuming that the rate of diffusion of a gas through a capillary is directly proportional to the surface area of the tube and inversely proportional to the diffusion distance (taken as the radius), calculate the ratio of the diffusion rate in capillary A to that in capillary B. Give your answer as a decimal to two significant figures.
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This is Igcse Model Questions Vol1 2021 Biology Question 6. It is one of the objective questions from the 2021 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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