Igcse Model Questions Vol1 2017 Biology Question 9
Practice objective / multiple choice question 9 from the 2017 Igcse Model Questions Vol1 Biology examination.
Diffusion of a solute across a capillary wall follows Fick's law: rate \(= \dfrac{D A \Delta C}{d}\). Given diffusion coefficient \(D = 1.0 \times 10^{-5}\,\text{cm}^2\text{s}^{-1}\), surface area \(A = 0.20\,\text{cm}^2\), concentration difference \(\Delta C = 0.5\,\text{mol cm}^{-3}\) and wall thickness \(d = 0.01\,\text{cm}\), calculate the percentage change in the diffusion rate if the wall thickness doubles.
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This is Igcse Model Questions Vol1 2017 Biology Question 9. It is one of the objective questions from the 2017 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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