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2.2 Animal tissues, organs and organ systems

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Question 15
F

Which adaptation of an alveolus gives gases the shortest distance to diffuse?

[1]
A

a wall that is only one cell thick

B

a very large total surface area

C

a dense network of surrounding capillaries

D

a moist lining covering the inner surface

Markscheme

2.2 Animal tissues, organs and organ systems Questions

  1. GCSE
  2. /Biology
  3. /2.2 Animal tissues, organs and organ systems

179 exam-style questions on AQA GCSE Biology 2.2 Animal tissues, organs and organ systems, covering 2.2.1 The human digestive system, 2.2.2 The heart and blood vessels, 2.2.3 Blood, 2.2.4 Coronary heart disease: a non-communicable disease, 2.2.5 Health issues, 2.2.6 The effect of lifestyle on some non-communicable diseases, and 2.2.7 Cancer. Each one has a worked solution and a mark scheme showing where the marks go.

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