7c ra adjusted

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]