Bring enzyme inhibition and cellular respiration to life with this engaging hands-on lab! In this experiment, students investigate how metabolic inhibitors affect cellular respiration in yeast by observing the color change of methylene blue, a redox indicator that acts as an electron acceptor. Learners model the electron transport chain using simple, classroom-safe materials to visualize how inhibitors like CuSO₄ block electron flow and slow respiration. Students collect timed data, constr