AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

Unit 5

Control in Cells & Organisms

Receptors & Responses

Practice Exam Questions

AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

Syllabus reference

AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

1

AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

Total 7 marks

AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

Total 6marks

AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

3

Total 5 marks

AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

4

AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

Total 7 marks

AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

5

AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

Total 6 marks

AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

6

AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

7

Many organisms can respond to changes in their environment by movement responses. Explain the meaning

of the following terms relating to movement responses. Give an example of each.

(a) Taxis

Meaning ………………………………………………………………………………………………………………………….

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Example …………………………………………………………………………………………………………………………..

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(3 marks)

(b) kinesis

Meaning ………………………………………………………………………………………………………………………….

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…………………………………………………………………………………………………………………………..

Example …………………………………………………………………………………………………………………………..

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(3 marks)

(c) tropism

Meaning ………………………………………………………………………………………………………………………….

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…………………………………………………………………………………………………………………………..

Example …………………………………………………………………………………………………………………………..

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(3 marks)

Total 9 marks

AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

Answers and Markscheme

1

AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

3.

AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

4

5

AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

6

AQA GCE Biology A2 Award 2411

Unit 5 Receptors & Responses

7

Question Expected answer Mark

7 (a) Meaning: Innate response; Seen in animals; Response to a directional stimulus; Animal moves away or towards stimulus/ direction of movement related to direction of stimulus Example: Negative phototaxis/ movement away from light by fly maggots; Accept other correct example

2 [max]

1

7 (b) Meaning: Innate response; Seen in animals; Response to a non-directional stimulus; Speed of movement related to intensity of stimulus; Example: Woodlice move slowly/turn less in damp/humid conditions; Woodlice move quickly/turn more in dry conditions Accept other correct example

2 [max]

1

7(c) Meaning: Plant response; Response to a directional stimulus; Growth response; Example: Phototropism/ geotropism/ hydrotropism explained correctly Accept other correct example

2 [max]

1

TOTAL 9

credit once only in (a) OR (b)