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1.3 Transport in cells

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Question 34
F

The lungs of a mammal contain millions of alveoli. Which adaptation of an alveolus gives oxygen the shortest diffusion path into the blood?

[1]
A

Each alveolus is surrounded by many blood capillaries.

B

The inside surface of each alveolus is covered in moisture.

C

The wall of each alveolus is only one cell thick.

D

There are millions of alveoli inside each of the lungs.

Markscheme

1.3 Transport in cells Questions

  1. GCSE
  2. /Biology
  3. /1.3 Transport in cells

58 exam-style questions on AQA GCSE Biology 1.3 Transport in cells, covering 1.3.1 Diffusion, 1.3.2 Osmosis, and 1.3.3 Active transport. Each one has a worked solution and a mark scheme showing where the marks go.

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