Answer:
Step-by-step explanation:
cellular respiration is a process by which organisms combine oxygen with food stuff molecules diverting the chemical energy in these substances into life sustaining activities and discarding as waste products carbon dioxide and water . Organisms that do not depend on oxygen degrade foodstuffs in a process called fermentation one objective of the degradation of foodstuff is to convert the energy contained in the chemical bonds into energy rich compound adenosine triphosphate which captures the chemical energy obtained from the breakdown of the food molecules and releases it to fuel other cellular processes in eukaryotic cells this process ocurrs in mitochondria A liver cell has about 1000 mitochondria