Infection and Response

1 Communicable Diseases and Human Defence Systems Describe what communicable diseases are, how pathogens spread and how the body defends itself. Spec 4.3.1 2 Viral Diseases Describe the main viral diseases — measles, HIV/AIDS and tobacco mosaic virus. Spec 4.3.1.2 3 Bacterial Diseases Describe Salmonella food poisoning and Gonorrhoea as examples of bacterial diseases. Spec 4.3.1.3 4 Fungal and Protist Diseases Describe rose black spot (fungal) and malaria (protist) as examples of these disease types. Spec 4.3.1.4 5 Vaccination Explain how vaccines work, why they protect populations and what herd immunity means. Spec 4.3.2 6 Antibiotics and Painkillers Explain how antibiotics work, why antibiotic resistance is a threat, and the role of painkillers. Spec 4.3.3 7 Drug Discovery and Development Describe how new drugs are discovered, tested and approved before being used on patients. Spec 4.3.4 8 Plant Disease Detection and Defence Describe how plant diseases are identified and how plants defend themselves against pathogens and pests. Spec 4.3.5