Give the name of each stage of metabolism on the line, and a brief, one sentence description of what occurs at that stage underneath. (Since scientists disagree where glycolysis formally belongs, you can include it where you like.)STAGE 1 _______STAGE 2 _______STAGE 3 _______STAGE 4 _______

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Answer:

Stage 1 is Catabolism: The carbohydrates, proteins, and lipids get dissociated into their individual monomeric units, that is, fatty acids, simple sugars, and amino acids respectively.  

Stage 2 is Metabolic pathways (Beta-oxidation and glycolysis); In the stage, the monomeric units further get dissociated by specific metabolic pathways to produce a common end component, that is, Acetyl-CoA.  

Stage 3 is the Krebs cycle: Acetyl-CoA gets completely oxidized to produce water, carbon dioxide, and reducing units like NADH, FADH2 and GTP.  

Stage 4 is Electron transport system or chain: In the process, production of ATP takes place by proton motive force, energy is created by the gradient, that is, produced when the protons move across the biological membrane.  

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