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2.2 Animal tissues, organs and organ systems

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Question 80
F

Substances are exchanged between the blood and the body cells in the capillaries and not in the arteries. Which feature of a capillary explains this?

[1]
A

Its lumen is narrow, which keeps the blood inside it at high pressure

B

It forms a network that links the arteries to the veins in a tissue

C

Its wall contains elastic tissue that stretches with each heartbeat

D

Its wall is one cell thick, giving a short distance for diffusion

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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