The OCR GCSE Biology Paper 1 (November 2020) covers key topics such as cell biology, photosynthesis, respiration, hormonal regulation, and human physiology. It includes investigations into mitosis, enzyme activity, and plant adaptations for water conservation. Core themes explore DNA structure, diffusion, osmosis, and kidney function. Practical applications include analyzing experimental results, light microscopy, and factors affecting transpiration. The paper emphasizes data interpretation, scientific methods, and understanding biological systems in both plants and animals.