Biology Paper 1 · B3 · Lesson 3.3
Salmonella and gonorrhoea: symptoms, spread and control.
Salmonella bacteria can be swallowed in contaminated food. The bacteria and their toxins can cause fever, stomach cramps, vomiting and diarrhoea. Poor food hygiene helps them spread.
A toxin is a poison made by a pathogen.
No timer. Read the explanation after each answer.
Daily 5 · Exam practice · Download the A4 revision sheet
Core content is shared by Foundation and Higher Tier. Challenge questions ask you to explain and apply it.
AQA Combined Science Trilogy specification · 4.3.1.3. Notes, questions and diagrams are original teaching material.
Rose leaf: LiquidGhoul / Wikimedia Commons, public domain. Mosquito: CDC / Jim Gathany, PHIL 5814, public domain. This photograph shows a vector species; it does not establish that this individual carries malaria.