Overview: Cellular Respiration Occurs in Three Main Stages – Flashcards
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What are the three steps of cellular respiration?
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Glycolysis, Citric Acid Cycle, Oxidative Phosphorylation
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Where does glycolysis occur?
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Glycolysis occurs in the cytoplasmic fluid of the cell, that is, outside the organelles.
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How does glycolysis begin respiration?
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Glycolysis begins respiration by breaking glucose into two molecules of a three-carbon compound called pyruvate.
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How does glycolysis begin respiration?
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Glycolysis begins respiration by breaking glucose into two molecules of a three-carbon compound called pyruvate.
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Where does the Citric acid cycle take place?
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The citric acid cycle takes place in the mitochondria.
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What does the citric acid cycle do?
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It completes the breakdown of glucose by decomposing a derivative of pyruvate to carbon dioxide.
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What is the main function of glycolysis and the citric acid cycle?
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To supply the third stage of respiration with electrons.
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What does oxidative phosphorylation involve?
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Oxidative phosphorylation involves the electron transport chain and a process known as chemiosmosis.
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What is the purpose of NADH and FADH2?
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They shuttle electrons to the electron transport chain embedded in the inner mitochondrion membrane.
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When is most of the ATP produced by cellular respiration generated?
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Most of the ATP produced by cellular respiration is generated by oxidative phosphorylation, which uses the energy released by the downhill fall of electrons from NADH to FADH2 to O2 to phosphorylate ADP.
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What couples the electron transport chain to ATP synthesis?
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Where does glycolysis occur?
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Where does glycolysis occur?
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Where does glycolysis occur?
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