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2.2 Animal tissues, organs and organ systems

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Question 20
F

A student reads that the tar in tobacco smoke is a carcinogen. What does the word carcinogen mean?

[1]
A

A substance that causes mutations which can lead to cancer

B

A substance that stops damaged body cells dividing by mitosis

C

A substance that carries cancer cells around the body in blood

D

A substance that is released by the cells inside a large tumour

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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