MRSA is a strain of bacterium that is not killed by many antibiotics. The number of infections caused by MRSA rose after antibiotics had been in use for several years.
Explain how the overuse of antibiotics leads to the emergence of resistant strains such as MRSA, and describe how doctors and patients can slow this process down.
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.