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2.2 Animal tissues, organs and organ systems

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Question 51
F

Capillaries are the smallest blood vessels in the body.

a.

The wall of a capillary is only one cell thick. Explain how this helps the exchange of substances between the blood and the body cells.

[2]
b.

Capillaries form a very large network in every tissue. Suggest why this is important.

[1]
c.

A student said, 'The wall of a capillary is one cell thick, so the cells in the wall must have cell walls.' Explain why the student is wrong.

[1]
d.

Name the type of blood vessel that carries blood into a capillary network.

[1]
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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