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6 Written questions

6 Multiple choice questions

  1. One of the compounds that form between the initial reactant and the final product in a metabolic pathway, such as between glucose and pyruvate in glycolysis
  2. The formation of ATP by an enzyme directly transferring a phosphate group to ADP from an organic molecule
  3. Energy-coupling mechanics that uses the energy of hydrogen ion gradients across membranes to phosphorylate ADP; powers most ATP synthesis in cells
  4. The multistep chemical breakdown of a molecule of glucose into two molecules of pyruvate; the first stage of cellular respiration in all organisms; occurs in the cytoplasmic fluid
  5. The gain of electrons by a substance involved in a redox reaction; always accompanies oxidation
  6. The conversion of pyruvate from glycolysis to carbon dioxide and ethyl alcohol

6 True/False questions

  1. oxidationThe loss of electrons from a substance involved in a redox reaction; always accompanies reduction

          

  2. oxidative phosphorylationThe production of ATP using energy derived from the redox reactions of an electron transport chain; the third major stage of cellular respiration

          

  3. citric acid cycleThe entry compound for the citric acid cycle in cellular respiration; formed from a fragment of pyruvate attached to a coenzyme

          

  4. ATP synthaseA cluster of several membrane proteins that function in chemiosmosis with adjacent electron transport chains, using the energy of a hydrogen ion concentration gradient to make ATP

          

  5. facultative anaerobeAn organism that makes ATP by aerobic respiration if oxygen is present, but that switches to fermentation when oxygen is absent

          

  6. obligate anaerobesAn organism that makes ATP by aerobic respiration if oxygen is present, but that switches to fermentation when oxygen is absent

          

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