Summary of the three stages of aerobic respiration in a mitochondrion

A First stage: in cytoplasm, glucose is convened to 2 pyruvate; 2 NADH 2. » and 4 ATP also form. An investment of 2 ATP began the reactions, so the 2 NAD“ net yield is 2 ATP.

B Second stage: In the mitochondrial matrix, 10 additional ccenzyrnes are reduced during the secondrstage reap, tions. All six carbons of glucose leave the cell (as 6 (302], and 2 ATP form.

C Third stage: The reduced ooenzyrnes give up electrons and hydrogen ions to electron transfer chains in the inner mitochondrial membrane. Energy lost by the elections as they flow through the chains is used to move H“ across the membrane. The resulting gradient causes H+ to flow through ATP synthases, which drives ATP synthesis.