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Biology 4BI1/2B November 2021 | Edexcel International GCSE Past Papers With Mark Scheme

1. Heart Transplant and Immunosuppression: Procedure of heart transplants, role of immunosuppressants, risks of organ rejection, and importance of a balanced diet in post-transplant recovery.

2. Plant Reproduction and Pollen Tube Growth: Flower structure, pollen tube formation, effect of transcription and translation inhibitors on pollen tube development, and experimental setups for pollen germination.

3. Kidney Function and Urine Production: Filtration process in the nephron, reabsorption of glucose and water, effects of ADH on urine concentration, and impact of substances on kidney function.

4. Genetic Cloning and Cell Differentiation: Use of fetal vs. adult cells in monkey cloning, ethical and success rate comparisons, embryonic development, and cell specialization in tissue formation.

5. Ecology and Energy Transfer: Quadrat sampling for biodiversity analysis, species distribution in different habitats, impact of environmental conditions on plant growth, and energy flow in ecosystems.

6. Obesity and Nutritional Science: Investigation of energy content in different foods, experimental methods for measuring caloric content, and the role of diet in maintaining energy balance.
Edexcel International GCSE Biology (4BI1) Nov 2021

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Classification: Edexcel Paper 2
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