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AQA GCE Biology A2 Award 2411
Unit 5 Receptors & Responses
Unit 5
Control in Cells & Organisms
Receptors & Responses
Practice Exam Questions
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AQA GCE Biology A2 Award 2411
Unit 5 Receptors & Responses
Syllabus reference
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AQA GCE Biology A2 Award 2411
Unit 5 Receptors & Responses
1
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AQA GCE Biology A2 Award 2411
Unit 5 Receptors & Responses
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AQA GCE Biology A2 Award 2411
Unit 5 Receptors & Responses
Total 7 marks
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AQA GCE Biology A2 Award 2411
Unit 5 Receptors & Responses
Total 6marks
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AQA GCE Biology A2 Award 2411
Unit 5 Receptors & Responses
3
Total 5 marks
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AQA GCE Biology A2 Award 2411
Unit 5 Receptors & Responses
4
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AQA GCE Biology A2 Award 2411
Unit 5 Receptors & Responses
Total 7 marks
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AQA GCE Biology A2 Award 2411
Unit 5 Receptors & Responses
5
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AQA GCE Biology A2 Award 2411
Unit 5 Receptors & Responses
Total 6 marks
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AQA GCE Biology A2 Award 2411
Unit 5 Receptors & Responses
6
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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 ………………………………………………………………………………………………………………………….
…………………………………………………………………………………………………………………………..
…………………………………………………………………………………………………………………………..
Example …………………………………………………………………………………………………………………………..
…………………………………………………………………………………………………………………………..
…………………………………………………………………………………………………………………………..
(3 marks)
(b) kinesis
Meaning ………………………………………………………………………………………………………………………….
…………………………………………………………………………………………………………………………..
…………………………………………………………………………………………………………………………..
Example …………………………………………………………………………………………………………………………..
…………………………………………………………………………………………………………………………..
…………………………………………………………………………………………………………………………..
(3 marks)
(c) tropism
Meaning ………………………………………………………………………………………………………………………….
…………………………………………………………………………………………………………………………..
…………………………………………………………………………………………………………………………..
Example …………………………………………………………………………………………………………………………..
…………………………………………………………………………………………………………………………..
…………………………………………………………………………………………………………………………..
(3 marks)
Total 9 marks
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AQA GCE Biology A2 Award 2411
Unit 5 Receptors & Responses
Answers and Markscheme
1
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AQA GCE Biology A2 Award 2411
Unit 5 Receptors & Responses
3.
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AQA GCE Biology A2 Award 2411
Unit 5 Receptors & Responses
4
5
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AQA GCE Biology A2 Award 2411
Unit 5 Receptors & Responses
6
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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)