Aerobic Respiration Occurs in 3 Major Stages
Glycolysis - breaks glucose down into 2 molecules of pyruvic acid (a 3-C cmpd). This occurs in the cytoplasm
Krebs Cycle (Citric Acid Cycle) - breaks pyruvic acid down into CO2. Occurs in mitochondria - O2 required
Electron Transport System - transfers e that were removed from Krebs intermediates - Occurs in mitochondria and O2 is used