Assess students' understanding of how photosynthesis and cellular respiration convert and transfer energy in organisms and ecosystems. Test knowledge of reactants/products, roles of chloroplasts and mitochondria, ATP as the energy carrier, basic chemical equations, aerobic vs. anaerobic outcomes, and interpreting simple diagrams; include tasks such as labeling steps, comparing processes, and predicting effects of changes in light or oxygen. Designed for grades 6–8 with moderate analytical demand.