7402 3 - Study guides, Class notes & Summaries

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...

AQA A level BIOLOGY 7402/3 Paper 3 June 2023 official QUESTION PAPER

AQA A-level BIOLOGY 7402/3 Paper 3 Mark scheme June 2023 (VERIFIED) (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...

Official June 2024 AQA A-LEVEL BIOLOGY 7402/3 Paper 3 Merged Question Paper + Mark Scheme

AQA A LEVEL BIOLOGY PAPER 1 2021. Describe the induced-fit model based on enzyme action and how an enzyme acts as a catalyst. [3 marks] . 2 Scientists investigated the action based on the enzyme ATP synthase. They made reaction mixtures each containing: • ATP synthase • buffer (to control pH) • substrates. One based on the substrates required within these reaction mixtures is inorganic phosphate (Pi). Tick ( ) one box to show which other substrate the scientists must add to the ...

AQA A level BIOLOGY 7402/3 Paper 3 Mark scheme June 2023

AQA A-level BIOLOGY 7402/3 Paper 3 Mark Scheme JUNE 2022 Version 1.0 Final

2023 AQA A-level BIOLOGY 7402/3 Paper 3 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]

Actual 2024 AQA A-LEVEL BIOLOGY 7402/3 Paper 3 Merged Question Paper + Mark Scheme

Aqa A-level BIOLOGY Paper 3 (7402/3) June 2022 Question Paper