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Cellular Respiration Overview - General Biology

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Terms in this set (10)

  • What are the starting and ending molecules of cellular respiration?
    Cellular respiration starts with glucose and oxygen and ends with water (H2O), carbon dioxide (CO2), and energy.
  • What is the main purpose of glycolysis in cellular respiration?
    Glycolysis converts sugar into pyruvate, energy, water, and electron carriers NADH.
  • What are the products of pyruvate oxidation?
    Pyruvate oxidation produces enzyme CoA, NADH, and CO2, and this happens twice per glucose molecule.
  • What happens during the citric acid cycle?
    The citric acid cycle uses enzymes and ADP to produce CO2, electrons for NADH and FADH2, and two ATP molecules.
  • What is the role of oxidative phosphorylation in cellular respiration?
    Oxidative phosphorylation uses the electron transport chain (ETC), proton motive force, and ATP synthase to produce 32 ATP.
  • How many ATP molecules are produced in total by cellular respiration?
    Cellular respiration produces a total of 32 ATP molecules.
  • Which stage of cellular respiration produces water as a product?
    Water is produced during oxidative phosphorylation when oxygen accepts electrons.
  • What electron carriers are generated during glycolysis and the citric acid cycle?
    Electron carriers NADH are produced in glycolysis and both NADH and FADH2 are produced in the citric acid cycle.
  • How many times does pyruvate oxidation occur per glucose molecule?
    Pyruvate oxidation occurs two times per glucose molecule because glucose splits into two pyruvate molecules.
  • What is the function of Coenzyme A (CoA) in cellular respiration?
    Coenzyme A binds to pyruvate during pyruvate oxidation to form acetyl-CoA, which enters the citric acid cycle.