Biology A H020: Communicable diseases, disease prevention and the immune system Topical Past Paper Questions
OCR AS Biology A (H020) past-paper questions on Communicable diseases, disease prevention and the immune system, free. This topic is frequently examined across 5 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
(a) Zombie-ant fungus is a pathogen that causes a disease in ants. Fig. 2.1 shows an ant infected by the zombie-ant fungus. Fig. 2.1 This fungus affects the behaviour of an ant in these ways: An infected ant will climb to a high point in a tree, bite into a branch or leaf and the…
(a) Measles, Mumps and Rubella are communicable diseases. They can be prevented by the use of the MMR vaccine which is administered to children. The table below shows some data on the number of children given the MMR vaccine and the incidence of measles between 2012 and 2014. (i)…
In England and Wales, between 1992 and 2001, samples of blood were taken from patients infected with the bacterium Staphylococcus aureus. The graph shows the percentage of these samples that were methicillin-resistant (MRSA). Percentage of blood samples that are methicillin-resis…
Sign in required
Full Communicable diseases, disease prevention and the immune system question set, mark schemes and AI worksheets
Log in for the full topic-segregated question set, mark schemes, and AI worksheets built from every Biology A past paper. New accounts start with 25 free credits.
Explore all Biology A topics
All Biology A topics