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
A student looks at a thin slice of leaf under a light microscope.
.1Which equation links magnification, image size and real size?
[1 mark] .2A guard cell is 0.05 mm long. In the student's drawing it is 20 mm long.
Calculate the magnification of the drawing.
[1 mark] .3An electron microscope can show ribosomes, but a light microscope cannot.
What is the reason?
[1 mark] 3 marksFoundation
A leaf is a plant organ made of several tissues.
.1What is the main function of the palisade mesophyll tissue?
[1 mark] .2Name the tissue that carries water from the roots to the leaves.
[1 mark] .3What does phloem tissue transport?
[1 mark] 4 marksFoundation
Diseases can be communicable or non-communicable.
.1Which two diseases are non-communicable? Tick two boxes.
[2 marks] .2What is a carcinogen?
[1 mark] .3Drinking large amounts of alcohol over many years is a risk factor for disease in one organ in particular.
Name this organ.
[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] 