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3.1 Communicable diseases

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Question 61
F

A vaccine is developed against one strain of the influenza virus. It gives very little protection against a new strain of influenza. Why?

[1]
A

The new strain reproduces faster than the memory cells are able to divide

B

The new strain destroys the memory cells that were made after the vaccination

C

The new strain has antigens of a different shape, so the antibodies do not fit

D

The new strain is a bacterium, so antibodies made against a virus have no effect

Markscheme

3.1 Communicable diseases Questions

  1. GCSE
  2. /Biology
  3. /3.1 Communicable diseases

176 exam-style questions on AQA GCSE Biology 3.1 Communicable diseases, covering 3.1.1 Communicable (infectious) diseases, 3.1.2 Viral diseases, 3.1.3 Bacterial diseases, 3.1.4 Fungal diseases, 3.1.5 Protist diseases, 3.1.6 Human defence systems, 3.1.7 Vaccination, 3.1.8 Antibiotics and painkillers, and 3.1.9 Discovery and development of drugs. Each one has a worked solution and a mark scheme showing where the marks go.

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