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2.2 Animal tissues, organs and organ systems

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Question 9

Scientists recorded the weekly alcohol consumption and incidence of liver disease in four groups of adults.

Weekly alcohol consumptionIncidence of liver disease per 1000 adults
0 units2
1–7 units4
8–14 units8
More than 14 units15

Explain why these results alone do not show that drinking alcohol causes liver disease, and what evidence would be needed to establish a causal link.

[3]
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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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