Sciences Co-ordinated 0654/23 Oct Nov 2024 | Cambridge IGCSE Past Papers With Mark Scheme

1. Biology: Nutrition & Enzymes | Role of protein in animal growth, effects of sucrose concentration on potato cells, identification of starch and protein in food tests, enzyme-controlled reactions in browning of apples.

2. Plant & Human Physiology | Causes of yellowing leaves, dietary fiber importance, life cycle roles of plant roots, metabolic process in bread-making, involuntary actions in the nervous system.

3. Genetics & Ecology | Artificial selection sequence, structure identification in flowers, food chain roles, eutrophication and oxygen depletion in water bodies.

4. Chemistry: Atomic Structure & Reactivity | Identifying isotopes, molar gas volume calculations, electrolysis of lead(II) bromide, activation energy in exothermic reactions.

5. Physical & Organic Chemistry | Rates of reaction measurement, oxidation and reduction in metal displacement, solubility of cobalt(II) compounds, ammonium ion test, trends in Group VII elements.

6. Physics: Forces, Energy & Waves | Density determination, moment calculations in levers, energy resources, gas pressure changes, thermal energy transfer from the Sun.

7. Optics, Electricity & Magnetism | Light refraction in glass, lens focal points, filament lamp resistance, circuit resistance calculations, fuse and wire selection for motors.

8. Electromagnetism & Nuclear Physics | Magnetic field patterns around current-carrying wires, slip rings in AC generators, beta and gamma radiation deflection in magnetic fields.