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] 3 marksFoundation
A person touches a hot pan and quickly pulls their hand away. This is a reflex action.
.1Put the parts of the reflex arc in order, starting with the receptor.
[1 mark] .2How does the signal cross a synapse between two neurones?
[1 mark] .3Which part of this reflex is the effector?
[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] 4 marksFoundation
Substances move into and out of cells by diffusion, osmosis and active transport.
.1Which statement describes diffusion?
[1 mark] .2Which two changes would increase the rate of diffusion of oxygen into a cell? Tick two boxes.
[2 marks] .3Root hair cells take in mineral ions from very dilute soil water. Which process do they use?
[1 mark] 3 marksFoundation
Body cells divide in a series of stages called the cell cycle.
.1Put the stages of the cell cycle in the correct order, starting with the first.
[1 mark] .2Name the type of cell division in the cell cycle that makes two genetically identical cells.
[1 mark] .3In the nucleus of a human body cell, how are the chromosomes arranged?
[1 mark] 