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2.2 Animal tissues, organs and organ systems

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Question 72
F

A woman is told that she has inherited a faulty version of the BRCA1 gene. This gene normally helps to control cell division.

a.

Explain why inheriting a faulty version of this gene increases her risk of developing cancer.

[2]
b.

Her brother has inherited the same faulty gene. Suggest why doctors describe the faulty gene as a risk factor for cancer rather than a cause of cancer.

[2]
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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