Several students at a catering college are infected with Helicobacter. The college is deciding whether to require handwashing before food preparation or to improve air extraction in the kitchens.
Which judgement is correct?
Air extraction is relevant because it removes bacteria carried between people in airborne droplets
Air extraction is relevant because it removes viruses released when infected people breathe out
Handwashing is relevant because it reduces bacteria passing to people in contaminated food
Handwashing is relevant because it prevents fungal spores from reproducing in prepared food
112 exam-style questions on Edexcel GCSE Biology 5.1 Health and communicable disease, covering 5.1.1 Communicable and non-communicable diseases, 5.1.2 Disease susceptibility interactions, 5.1.3 Pathogens as disease-causing organisms, 5.1.4 Common infections, 5.1.5 Spread and prevention of pathogens, 5.1.6 Lifecycle of a virus, and 5.1.7 Spread and prevention of STIs. Each one has a worked solution and a mark scheme showing where the marks go.