Answer:
An array of metabolic processes and reactions, which occur within the organism's cells and transform biochemical energy from the nutrients into ATP, and then discharge waste components is termed as cellular respiration.
During cellular respiration, the conversion of pyruvate to acetyl CoA occurs within the cytosol. The mechanism of the electron transport chain takes place within the mitochondrial membrane. The dissociation of glucose into pyruvate takes place within the cytosol, and the phenomenon of TCA or citric acid cycle occurs within the mitochondrial matrix.