Summary of Cellular respiration

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Learn about energy production in cellular respiration


Glucose undergoes combustion inpresence of oxygen to form carbon dioxide,water,heat and ATP.
The overall reaction of cellular respiration is as follows:
C6H12O6+6O2--->6CO2+6H2O+Heat+36ATP
The energy in this reaction comes from the release of free energy because of movement of electrons from higher energy free to stable lower energy state.
Cellular respiration happens in all cells that contain a cell structure known as mitochondria.
The entire process occurs in four stages and in three different places within the cell:
Stage 1: Glycolysis—a 10-step process occurring in the cytoplasm
Stage 2: Pyruvate oxidation—a one-step process occurring in the mitochondrial matrix
Stage 3: The Krebs cycle (also called the tricarboxylic acid cycle, the TCA cycle, or the citric acid cycle)—an eight-step cyclical process occurring in the mitochondrial matrix
Stage 4: Electron transport and chemiosmosis (oxidative phosphorylation)—a multistep process occurring in the inner mitochondrial membrane
The summary of energy released in this process is as follows:
Summary of cellular respiration