Assess students' understanding of the three main stages of aerobic cellular respiration—glycolysis, the citric acid (Krebs) cycle, and oxidative phosphorylation—by asking them to identify where each stage occurs, list key reactants and products, explain the roles of NADH and FADH2, and calculate/compare energy yields (ATP per glucose, plus NADH/FADH2 contributions). Include short explanations of electron transport, chemiosmosis, and factors that can alter theoretical ATP yield.