Combined Science J250,07 Higher November 2021, OCR GCSE Past Papers with Mark Schemes

The OCR GCSE Combined Science A J250/07 November 2021 paper covers Biology topics, including cell magnification, heart function, respiration, enzyme activity, and plant processes. Section A features multiple-choice questions on concepts such as glucagon, anaerobic respiration, and prokaryotic cells. Section B includes practical investigations on enzyme reactions, photosynthesis, and water uptake, alongside extended responses on damaged heart valves, stem cell applications, and the nervous system. Key skills assessed include experimental analysis, critical reasoning, and biological systems understanding. Total marks: 60. Duration: 1 hour 10 minutes.