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3.1 Communicable diseases

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Question 15
F

HIV is a virus that is spread by sexual contact or by the exchange of body fluids such as blood.

a.

An HIV infection is not treated. Describe how the infection changes over time, from the first symptoms to late-stage HIV infection.

[4]
b.

A person infected with HIV is given antiretroviral drugs.

Explain how these drugs prevent the person from developing AIDS.

[2]
c.

Explain why a person who has AIDS may die from an infection that a healthy person would recover from.

[2]
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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