Aqa a level biology 7402 Study guides, Class notes & Summaries
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AQA A-level BIOLOGY 7402/3 Paper 3 Mark scheme June 2023
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AQA 
 
 
 
A-level 
BIOLOGY 
7402/3 
Paper 3 
Mark scheme 
June 2023
-
AQA A level BIOLOGY 7402/3 Paper 3 Mark scheme June 2023.
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AQA A level BIOLOGY 7402/3 Paper 3 Mark scheme June 2023. (There are) stretch-mediated sodium ion 
channels (in the membrane); 
2. (Increased pressure) deforms/changes 
(sensory neurone/axon) membrane/lamella(e) 
OR 
(Increased pressure) deforms/changes sodium 
ion channels; 
3. Sodium ion channels open; 
4. Sodium ions diffuse in; 
5. Depolarisation (leading to generator potential); 
3 max 
(3 x 
AO1) 
1. 2. 3. or 4. Accept 
Na+ 
Max 2 if only 
reference to sodium 
and not sodium ions 
4. Accep...
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AQA A-level BIOLOGY 7402/2 Papers 2022&2023. bundle
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AQA A-level BIOLOGY 7402/2 Paper
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AQA A level BIOLOGY 7402/3 Paper 3 Mark scheme June 2023
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AQA A level BIOLOGY 7402/3 Paper 3 Mark scheme June 2023
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AQA A level BIOLOGY 7402/3 Paper 3 June 2023 official QUESTION PAPER
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AQA A level BIOLOGY 7402/3 Paper 3 June 2023 official QUESTION PAPER
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AQA A LEVEL BIOLOGY PAPER 1 JUNE 2023 QUESTION PAPER (7402/1)
- Exam (elaborations) • 36 pages • 2023
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This is AQA A LEVEL BIOLOGY PAPER 1 JUNE 2023 QUESTION PAPER (7402/1) 
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AQA A level BIOLOGY 7402/1 Paper 1 Final Mark scheme June 2022 AQA A level BIOLOGY 7402/1 Paper 1 Final Mark scheme June 2022 AQA A level BIOLOGY 7402/1 Paper 1 Final Mark scheme June 2022 AQA A level BIOLOGY 7402/1 Paper 1 Final Mark scheme June 2022 Mar
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AQA A level BIOLOGY 7402/1 Paper 1 Final Mark scheme June 
2022 
AQA A level BIOLOGY 7402/1 Paper 1 Final Mark scheme June 
2022 
AQA A level BIOLOGY 7402/1 Paper 1 Final Mark scheme June 
2022 
AQA A level BIOLOGY 7402/1 Paper 1 Final Mark scheme June 
2022 
Mark scheme 
June 2021 
Version: 1.0 Final
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