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Biology 4BI1/1B May Jun 2023 | Edexcel International GCSE Past Papers With Mark Scheme

1. Characteristics of Living Organisms and Pathogens: Defining basic life processes, identifying bacterial pathogens, comparing virus and bacteria structures, and describing plant viral infections.

2. Ecology and Food Webs: Constructing food chains, understanding energy transfer, describing decomposition by bacteria and fungi, and analyzing pesticide effects on trophic levels.

3. Cell Biology and Osmosis: Identifying plant cell structures, calculating surface area to volume ratios, explaining effects of osmosis on red blood cells in different solutions.

4. Nervous System and Reflexes: Describing reflex responses, labeling nerve impulse pathways, calculating nerve transmission speeds, and explaining the function of pain in survival.

5. Blood Composition and Circulatory System: Identifying blood components, describing phagocytosis in white blood cells, calculating magnification, and analyzing oxygen saturation in anaemia.

6. Genetics and Enzyme Activity: Performing genetic crosses, calculating expected offspring ratios, designing enzyme activity experiments, analyzing lipase reaction rates with temperature changes.
Edexcel International GCSE Biology (4BI1) Jun 2023

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Classification: Edexcel Paper 1
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