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8.1 Exchange surfaces and diffusion

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Question 7

A technician is choosing a gel model of a cell with a surface area to volume ratio of 5:25:25:2.

Each model has a total surface area of 750 mm2.

ModelVolume in mm3\mathrm{mm^3}mm3
P150
Q300
R750
S1875

What model should the technician select?

[1]
A

Model S

B

Model P

C

Model Q

D

Model R

Markscheme

8.1 Exchange surfaces and diffusion Questions

  1. GCSE
  2. /Biology
  3. /8.1 Exchange surfaces and diffusion

102 exam-style questions on Edexcel GCSE Biology 8.1 Exchange surfaces and diffusion, covering 8.1.1 Introduction to exchange and transport, 8.1.2 Alveoli adapted for gas exchange, 8.1.3 Factors affecting rate of diffusion, and 8.1.4 Rate of diffusion using Fick's law. Each one has a worked solution and a mark scheme showing where the marks go.

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