cellular digestion is when a room absorption from space and walking into oxygen dioxide, water, and matter & look are made of monomer ->  cellular respiration is when a cell converts from oxygen and sugar into carbon dioxide, water, and energy  cellular respiration is when a cell converts from oxygen and sugar into carbon dioxide, water, and energy & in the cellular sugar / plant honey sonar oxygen oxygen is a wanted service -> carbon dioxide is produced as wasted when sugar is processed by cell respiration