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8.1 Exchange surfaces and diffusion

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Question 15
F

An organism has a surface area of 240 mm2 and a volume of 160 mm3.

What is its surface area to volume ratio in its simplest whole-number form?

[1]
A

2:32:32:3

B

4:14:14:1

C

3:23:23:2

D

8:38:38:3

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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