TEK B.9B Concept: Compare the Energy Flow in Photosynthesis to Cellular Respiration

Cellular respiration takes place in the mitochondria Cellular respiration takes place in the mitochondria. Glucose is the primary food molecule that living organisms use for energy production in the cells. The first pathway for energy release from glucose takes place in the cytoplasm and is called glycolysis. If oxygen is present, glycolysis is followed by two pathways. The first pathway is the Citric Acid Cycle or Kreb’s Cycle, followed by the electron transport chain. These two pathways make up cellular respiration which is the process that releases energy by breaking down glucose and other food molecules in the presence of oxygen.