The exam covers topics in biology, chemistry, and physics, focusing on plant water pathways, inheritance, and density. Key principles include the Periodic Table, tectonic plate movement, and the carbon cycle. Practical skills emphasize experimental design, data analysis, and identifying anomalies in reaction rates. Questions explore natural selection, thermal energy transfer, energy conservation, and wave properties. Applications include chemical reactions for salt production, the effects of mass extinctions, and theories of the Moon’s formation. Keywords: biology, chemistry, physics, inheritance, natural selection, energy conservation, chemical reactions, STEM education, Cambridge Checkpoint, experimental science.