3 marksFoundation
A food chain on a farm is: grass → rabbit → fox.
.1What is the grass in this food chain?
[1 mark] .2What do the arrows in a food chain show?
[1 mark] .3In a stable community, what usually happens to the fox population after the rabbit population increases?
[1 mark] 4 marksFoundation
Pathogens are microorganisms that cause infectious disease.
.1Which type of pathogen causes measles?
[1 mark] .2How is measles spread from person to person?
[1 mark] .3Which two actions reduce the spread of salmonella food poisoning? Tick two boxes.
[2 marks] 3 marksFoundation
The distribution of organisms in a habitat depends on abiotic and biotic factors.
.1Which two are abiotic factors? Tick two boxes.
[2 marks] .2Which resource do plants in a community compete for?
[1 mark] 4 marksFoundation
A student tests some foods for starch, sugar and protein.
.1Which solution does the student use to test for starch?
[1 mark] .2The student heats a food with Benedict's solution. The food contains a lot of glucose.
What colour does the mixture turn?
[1 mark] .3Name the solution used to test for protein.
[1 mark] .4Suggest why the student heats the Benedict's test tubes in a water bath rather than directly over a Bunsen burner.
[1 mark] 3 marksFoundation
The human body has several ways of stopping pathogens entering.
.1How does the nose help to stop pathogens entering the body?
[1 mark] .2The stomach helps to defend the body against pathogens.
Name the substance the stomach produces that kills pathogens.
[1 mark] .3Malaria is caused by a protist. How is it passed from person to person?
[1 mark] 