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Communicable diseases, disease prevention and the immune system

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Question 14

Which of the following changes or sanitation practices is/are likely to reduce the spread of a pathogen that is transmitted primarily via the waterborne (fecal-oral) route?

  1. Boiling drinking water before consumption
  2. Installing effective sewage treatment systems
  3. Wearing face masks in crowded public indoor spaces
A

1, 2 and 3

B

Only 1 and 2

C

Only 2 and 3

D

Only 1

Markscheme

Communicable diseases, disease prevention and the immune system Questions

  1. A Level
  2. /Biology
  3. /Communicable diseases, disease prevention and the immune system

40 exam-style questions on OCR A A Level Biology Communicable diseases, disease prevention and the immune system. Each one has a worked solution and a mark scheme showing where the marks go.

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