cellular respiration is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy & carbohydrates are made of sugars ->  cellular respiration converts from oxygen and sugars into carbon dioxide, water, and energy  food contains carbohydrates & cellular respiration is when cells break down / extract energy from food to produce energy & carbohydrates are made of sugars ->  cellular respiration is when cells break down / extract energy from sugars to produce energy  cellular respiration converts from oxygen and sugars into carbon dioxide, water, and energy & cellular respiration is when cells break down / extract energy from sugars to produce energy -> cellular respiration produces energy by converting sugars and oxygen into carbon dioxide, water, and energy