MARK SCHEME − A-LEVEL BIOLOGY − 7402/2 − JUNE 2021 Question Marking Guidance Mark Comments 1. Phosphorylation based on glucose using ATP; 2. Oxidation based on triose phosphate to pyruvate; Accept all mark points withindiagrams. 3. Net gain based on ATP; 4. NAD reduced; 2. Accept removal based on hydrogen from triosephosphate for oxidation. 01.1 4 max 3. Accept any description that indicates a net gain e.g., 4 produced, 2 used. 4. Accept NADH/NADH2/NAD H + H+ produced. ...

AQA A level Biology paper 2022

ANSWERS

. General The mark scheme for each question shows: • the marks available for each part of the question • the total marks available for the question • the typical answer or answers which are expected • Extra information to help the examiner make his or her judgement and help to delineate what is acceptable or not worthy of credit or, in discursive answers, to give an overview of the area in which a mark or marks may be awarded. The extra information in the ‘Comments’ column is...

AQA Biology A Level Paper 1 Specimen Marking Scheme

AQA A LEVEL BIOLOGY 2020 PAPER 3 QP

AQA A LEVEL BIOLOGY 2020 PAPER 3 MS

AQA A LEVEL BIOLOGY 2020 PAPER 1 MS

AQA A LEVEL BIOLOGY 2020 PAPER 1 QP