The June 2023 OCR Science GCSE Paper 7 evaluates biological concepts, focusing on cellular processes, photosynthesis, respiration, and homeostasis. Key areas include reflex arcs, hormonal regulation, stem cells, and water transport in plants. Practical applications include investigating anaerobic respiration, translocation, and osmosis. Students analyze experimental setups, interpret data, and apply concepts such as enzyme activity, light intensity, and water potential. Graph plotting, calculations, and comparison of physiological processes are emphasized. Keywords: GCSE Biology, cell cycle, photosynthesis, anaerobic respiration, reflex arcs, hormonal control, experimental analysis.