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2.2 Animal tissues, organs and organ systems

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Question 69

A virus infects cells in the kidneys. Scientists followed two groups of people for ten years and recorded new cases of kidney cancer.

GroupNew cases of kidney cancer per 100 000 people over ten years
People infected with the virus18
People not infected with the virus6

Explain how infection with the virus could account for the difference in kidney cancer incidence, and why these results alone cannot establish that explanation.

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2.2 Animal tissues, organs and organ systems Questions

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

304 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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