1. Diffusion and Enzyme Activity – Factors affecting diffusion in biological systems, enzyme properties, and metabolic reactions. 2. Human Body Systems – Function of the respiratory, circulatory, and reproductive systems, and effects of alcohol consumption. 3. Chemical Properties and Reactions – Atomic structure, reactivity trends, balancing equations, and energy changes in reactions. 4. Physics and Motion – Speed-time graphs, forces, moments, and density calculations. 5. Electricity and Magnetism – Ohm’s law, electrical circuits, heating effects, and electromagnetic applications. 6. Radioactivity and Waves – Properties of isotopes, ionizing radiation, and wave behavior including reflection and frequency.