Combined Sciecne 8464/1H June 2019

AQA GCSE Combined Science (8464) Jun 2019

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The June 2019 GCSE Combined Science Biology Paper 1 (Higher Tier) covers key topics including the circulatory system, heart structure, and drug effects on cardiac output. Digestive processes are explored through enzyme activity and absorption models. Investigations into water uptake examine transpiration rates under varying conditions. Pathogens are discussed with a focus on malaria prevention, bacterial growth, and differences between prokaryotic and eukaryotic cells. Plant biology addresses nitrate ion absorption and usage in growth. Practical skills include using potometers, performing microscope calculations, and interpreting experimental data. Keywords: biology, heart, enzymes, pathogens, transpiration, nitrate ions, digestion, plant growth.