Exam (elaborations)
OCR 2023 GCSE Combined Science Chemistry A Gateway Science J250/10: Paper 10 (Higher Tier) Question Paper & Mark Scheme (Merged)
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2 © OCR 2023 Section A You should spend a maximum of 20 minutes on this section. Write your answer to each question in the box provided. 1 Which reactions can be catalysed by an enzyme? A Combustion reactions B Electrolysis of metal ores C Reactions in biological systems D Reactions of me...
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