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2.2 Animal tissues, organs and organ systems

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Question 110
F

Scientists measured the incidence of a lung disease in a sample of 500 people who all worked in the same factory. They used this value as the incidence for the whole country. Why might this conclusion be invalid?

[1]
A

The sample of 500 people was too small for any conclusion at all to be drawn

B

The sample contained only people who already had symptoms of a lung disease

C

The sample was chosen at random, so other scientists cannot repeat the study

D

The sample is not representative, because the workers shared the same conditions

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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