Sciences Co-ordinated 0654/21 Oct Nov 2024 | Cambridge IGCSE Past Papers With Mark Scheme

1. Biological Processes & Organisms | Sensitivity in living organisms, gas exchange in cells, biological molecules in nutrition, enzyme activity affected by temperature.

2. Human Physiology & Plant Biology | Photosynthesis location, absorption of nutrients in the villi, transpiration rates in different weather conditions, respiratory gas exchange.

3. Genetics & Ecosystems | Inheritance of horn traits in cattle, genetic diagrams, definition of an ecosystem, carbon cycle interactions.

4. Chemistry of Solutions & Reactions | Electrolysis and ionic compounds, rates of reaction factors, solubility of metal compounds, formula determination of ionic compounds.

5. Physics of Motion & Energy | Density calculations, Hooke’s Law and spring extension, see-saw balancing forces, light refraction and electromagnetic wave properties.

6. Electricity & Radioactivity | Circuit resistance relationships, fuse ratings in electrical safety, transformer efficiency calculations, decay emissions in nuclear reactions.