A person is badly burned in a fire. Large areas of their skin are destroyed.
Explain why the person is at a high risk of infection.
Doctors cover the burns with sterile dressings. Suggest how this reduces the risk of infection.
The person also has a cut on an arm that was not burned. Describe how the body seals this cut.
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.