What is cellular respiration and why is it needed

Cellular respiration is the process by which cells in plants and animals break down sugar and turn it into energy, which is then used to perform work at the cellular level. The purpose of cellular respiration is simple: it provides cells with the energy they need to function.

Answer: Cellular respiration is a process that traits place in the mitochondrion of a cell. it is a cells way of producing energy. it is needed because without it your body wouldn't be able to perform any actions that needed energy, eventually leading to death.