Skip to content

Course home

Sign up

8.1 Exchange surfaces and diffusion

EasyMediumHard
1234567891011121314151617181920212223242526272829303132
Question 10
F

Air entering an alveolus has a higher oxygen concentration than the arriving blood. The arriving blood has a higher carbon dioxide concentration than the alveolar air.

Which pair gives the directions of net diffusion?

[1]
A

oxygen into the alveolus; carbon dioxide into the blood

B

oxygen into the blood; carbon dioxide into the blood

C

oxygen into the blood; carbon dioxide into the alveolus

D

oxygen into the alveolus; carbon dioxide into the alveolus

Markscheme

8.1 Exchange surfaces and diffusion Questions

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

42 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.

Question bank