A student looks at a leaf cell from a moss plant and a bacterial cell under a microscope.
How answer checking works
Fixed rules check calculations, units and supported phrases. A wording match is a guide to the scheme, not an examiner grade. Compare uncertain points with the scheme.
.1
Which structure controls which substances enter and leave the moss cell?
[1 mark]
.2
Give two ways the genetic material in the bacterial cell is different from the genetic material in the moss cell.
[2 marks]
.3
The moss cell is 0.1 mm long. The bacterial cell is 2 µm long.
Calculate how many times longer the moss cell is than the bacterial cell.
[2 marks]
4 marksFoundation
Spec and skills
Original practice question
Answer and supported method checks
Organisms reproduce sexually or asexually.
.1
Which statement describes asexual reproduction?
[1 mark]
.2
Which two are gametes in flowering plants? Tick two boxes.
[2 marks]
.3
Name the type of cell division that produces gametes.
[1 mark]
4 marksFoundation
Spec and skills
Original practice question
Answer and supported method checks
A student tests some foods for starch, sugar and protein.
.1
Which solution does the student use to test for starch?
[1 mark]
.2
The student heats a food with Benedict's solution. The food contains a lot of glucose.
What colour does the mixture turn?
[1 mark]
.3
Name the solution used to test for protein.
[1 mark]
.4
Suggest why the student heats the Benedict's test tubes in a water bath rather than directly over a Bunsen burner.
[1 mark]
4 marksFoundation
Spec and skills
Original practice question
Answer and supported method checks
Diseases can be communicable or non-communicable.
.1
Which two diseases are non-communicable? Tick two boxes.
[2 marks]
.2
What is a carcinogen?
[1 mark]
.3
Drinking large amounts of alcohol over many years is a risk factor for disease in one organ in particular.
Name this organ.
[1 mark]
3 marksFoundation
Spec and skills
Original practice question
Answer and supported method checks
A student looks at a thin slice of leaf under a light microscope.
.1
Which equation links magnification, image size and real size?
[1 mark]
.2
A 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]
.3
An electron microscope can show ribosomes, but a light microscope cannot.
What is the reason?
