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2.2 Animal tissues, organs and organ systems

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Question 62

Scientists recorded the incidence of coronary heart disease in groups of adults with different numbers of risk factors.

Number of risk factorsNew cases of coronary heart disease per 1000 adults per year
02
15
29
314

Describe the relationship shown by the data and explain why the data do not prove that having more risk factors causes coronary heart disease.

[3]
Markscheme

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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