Biology 4BI1/1BR January 2022 | Edexcel International GCSE Past Papers With Mark Scheme

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1. Cell Biology and Microscopy: Identifying plant cell organelles, determining storage carbohydrates, calculating magnification, and differences between eukaryotic and prokaryotic cells.

2. Genetics and Genetic Engineering: Yeast genetic modification for vaccine production, roles of restriction enzymes and ligase, advantages of transgenic organisms, and ethical considerations.

3. Respiration and Fermentation: Function of industrial fermenters, role of temperature control, need for sterile air supply, and factors affecting microbial growth in bioprocessing.

4. Ecology and Food Webs: Impact of species extinction on ecosystems, trophic level energy transfer, role of keystone species, and methods for measuring plant population size.

5. Human Physiology and Homeostasis: Regulation of body temperature via skin, impact of exercise on ventilation rate, and adaptations of red blood cells for oxygen transport in different species.

6. Plant Growth and Nutrition: Effect of fertilizers on seedling growth, role of magnesium and nitrate ions, and experimental design for investigating abiotic factor influence on plant development.

Edexcel International GCSE Biology (4BI1) Jan 2022

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Biology 4BI1/1BR January 2022 | Edexcel International GCSE Past Papers With Mark Scheme

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