A child with measles spends a day in a classroom with 30 other children. How is the measles virus most likely to reach the other children?
By inhalation of droplets released from coughs and sneezes
By the exchange of body fluids such as blood between people
By eating food that the infected child has already touched
By direct contact between the skin of two of the children
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.