Gce Model Questions Vol1 2021 Biology Question 22
Practice objective / multiple choice question 22 from the 2021 Gce Model Questions Vol1 Biology examination.
Diffusion of oxygen across a capillary wall follows Fick's law: rate \(= \dfrac{D \; A \; \Delta C}{\Delta x}\). Tissue A has a wall thickness of \(0.5 \;\mu\text{m}\), diffusion coefficient \(D = 2.0 \times 10^{-5}\,\text{cm}^2\text{s}^{-1}\), concentration gradient \(\Delta C = 0.10\ \text{mol cm}^{-3}\) and an effective surface area \(A\). Tissue B has double the surface area of tissue A, a wall thickness of \(1.0 \;\mu\text{m}\) and a concentration gradient of \(0.15\ \text{mol cm}^{-3}\) (same \(D\)). Which tissue provides the higher rate of oxygen diffusion? State the tissue name.
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About This Question
This is Gce Model Questions Vol1 2021 Biology Question 22. It is one of the objective questions from the 2021 Gce Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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