A level biology b paper 3 - Study guides, Class notes & Summaries

2023 AQA A-level BIOLOGY 7402/3 Paper 3 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature I declare this is my own work. A-level BIOLOGY Paper 3 Wednesday 21 June 2023 Morning Time allowed: 2 hours Materials For this paper you must have: • a ruler with millimetre measurements • a scientific calculator. Instructions • Use black ink or black ball-point ...

2023 AQA A-level BIOLOGY 7402/2 Paper 2 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature I declare this is my own work. A-level BIOLOGY Paper 2 Friday 16 June 2023 Morning Time allowed: 2 hours Materials For this paper you must have: • a ruler with millimetre measurements • a scientific calculator. Instructions • Use black ink or black ball-point pen...

2024 MOCKS EDEXCEL BIOLOGY B A LEVEL JUNE 2023 9NI0 MARKSCHEME OF PAPER 3 GENERAL PRATICAL PRINCIPLES IN BIOLOGY

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. (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...

EDEXCEL BIOLOGY B A LEVEL JUNE 2023 9NI0 PAPER 3 GENERAL PRATICAL PRINCIPLES IN BIOLOGY

Edexcel A Level 2022 Biology B PAPER 3: General and Practical Principles in Biology Mark Scheme

2024 EDEXCEL A-LEVEL BIOLOGY B PAPER 3 MARK SCHEME