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]
3 marksFoundation
Spec and skills
Original practice question
Answer and supported method checks
Body cells divide in a series of stages called the cell cycle.
.1
Put the stages of the cell cycle in the correct order, starting with the first.
[1 mark]
.2
Name the type of cell division in the cell cycle that makes two genetically identical cells.
[1 mark]
.3
In the nucleus of a human body cell, how are the chromosomes arranged?
[1 mark]
5 marksFoundation and Higher
Spec and skills
Original practice question
Answer and supported method checks
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
Automatic control systems keep conditions inside the body within narrow limits.
.1
Put the parts of a control system in order, starting with the stimulus.
[1 mark]
.2
What is homeostasis?
[1 mark]
.3
Which two internal conditions are controlled by homeostasis? Tick two boxes.
[2 marks]
3 marksFoundation
Spec and skills
Original practice question
Answer and supported method checks
Hormones are chemicals secreted by endocrine glands.
.1
Name the gland in the brain that is often called the 'master gland'.
