The three main steps of cellular respiration are in order from beginning to end Krebs's Cycle, Electron Transport Chain, and Glycolysis. The correct option is C.
Cellular respiration is done in the presence of oxygen. In the process, the food material we eat is mixed with oxygen and broken down into small pieces and generates energy. The waste material is then excreted out of the body in the form of carbon dioxide.
Cellular respiration has different processes that occur in a sequence. The Krebs cycle and the electron transport chain take place inside the mitochondria, whereas glycolysis takes place in the cytosol.
Thus, the correct option is C. Krebs's Cycle, Electron Transport Chain, and Glycolysis.
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