Exam (elaborations)
A-level BIOLOGY (7402/1) Paper 1 Mark scheme
- Institution
- AQA
Question Marking Guidance Mark Comments 01.1 Any two of the following; Concentration of enzyme Volume of substrate solution pH 1 Allow same concentration of substrate 01.2 Ratio between 4:1 and 5:1;; 2 Initial rates incorrect but correctly used = 1 mar
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