A person with a communicable disease sneezes in a crowded room. Which describes the way the pathogen is most likely to be spread?
In water that other people take in when they are drinking
By direct contact between the skin of two different people
In droplets of liquid that other people breathe in
By an insect vector that bites two different people in turn
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.