Answer;
-Mitochondria
Explanation;
-Cellular respiration is the process by which cells breakdown organic molecules such as glucose to yield energy in the form of ATP, which is used by the cells to drive cellular processes such as transport, growth and excretion among others.
-The process mainly occurs in the mitochondria of a cell. The mitochondria therefore acts as a power house of the cell. Cellular respiration involves three stages or phases(if aerobic), glycolysis, citric acid cycle and electron transport chain.