Cellular respiration is like a monster because both of them break things down. Cellular respiration breaks down glucose and monsters break down towns. The monster, being scary, is the reactant and the whole town being scared is the product. Mitochondria is the process when respiration and energy occur and when monster attack the they go through the process of respiration and energy occurs. Monsters and cellular respiration are similar because the cells use ATP cellular energy and monsters eat things to have more energy.