1. Biology, chemistry, and physics integration — 50 marks — 45 minutes — Cambridge Lower Secondary Checkpoint Science Paper 1 (0893/01) — October 2024 session 2. Topics include: animal cell structure (nucleus, chromosome, gene), sound wave features (amplitude, frequency), nebula and star formation, plant water transport (root hair cells, xylem, transpiration), inheritance and sex chromosomes 3. Data interpretation and scientific skills: density calculations, graph plotting (resistance vs wire length), precision vs accuracy, anomalous result identification, law of conservation of mass 4. Real-world application: Group 1 element trends, bamboo scarcity and panda population, rainfall measurement reliability, energy transfer in electric lamps, endothermic vs exothermic reactions 5. Experimental design: use of voltmeter, thermometer to compare energy change, safety procedures (gloves for blood samples), fair testing via repetition and representation 6. Diagram-based questions: periodic table reading, force diagrams, particle bonding (covalent), fossil measurements, circuit current, translation to graphs and models (e.g. water molecule, sex inheritance)