Clevedon Community School
Science Department
Test 7CD Muscles, Bones and Ecosystems 40 marks
Answer all the questions on the paper provided
7C 1 a
Miranda has gone running. What happens to her breathing rate as she runs?
[1 mark] b
As Miranda runs, her pulse rate goes up. What does this show?
[1 mark] 2 Look at the drawing.
a
Give the names of parts W, X, and Y. W X Y [3 marks]
b
Part Y can be moved. What needs to be attached to part Y to move it?
[1 mark] c
Describe the functions of parts P.
[2 marks] 3 a
Alcohol is a drug. What is a drug?
[1 mark]
b
Some people feel that they cannot live without a drug. What is it called when someone feels like this?
[1 mark] 4 The diagram shows the bones and muscles of a human arm.
a
What connects the bones together?
[1 mark] b
Describe what happens to the muscles in your upper arm to move the lower arm in the direction shown in the diagram.
[4 marks] 5 Some scientists carried out an investigation into how a drug called Longmasterol changed the reaction time in people of different ages. A graph of their results is shown below.
a
Describe the effect of Longmasterol on reaction time.
[1 mark]
b
Suggest the name of another drug that would have a similar effect.
[1 mark] 6 The diagram shows the inside of a grasshopper leg and two of the muscles (one big and one small).
a
What are pairs of muscles such as this called?
[1 mark] b
Why do muscles operate in pairs?
[1 mark] 7 The diagram shows a capillary. Part of the capillary wall has been removed to show the blood inside it.
a
Give the major function of red blood cells.
[1 mark] b
Give one function of plasma.
[1 mark]