Question 1
FMalaria is common in some tropical countries.
Scientists recorded the number of cases of malaria in two villages, A and B. At the start of 2012, every family in village A was given bed nets treated with insecticide. No bed nets were given to families in village B.
The Figure shows the results.
Figure
a.[1]
Name the type of pathogen that causes malaria.
b.[2]
Malaria is spread by an animal vector.
Describe how mosquitoes spread malaria from one person to another.
c.[3]
Explain the difference between the results for village A and village B after 2012.
d.[1]
Give one reason why the scientists also recorded the number of cases in village B.
5.1 Health and communicable disease Questions
43 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.