ATP Production and Feedback Inhibition
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Questions and Answers

Which molecule is reduced to form NADH?

  • ATP
  • Glucose
  • Nicotinamide Adenosine Dinucleotide (correct)
  • Pyruvate

    • During cellular respiration, what happens to the carbon atoms of glucose?

  • They are broken down into pyruvate
  • They are oxidized to form carbon dioxide (correct)
  • They are converted to ATP
  • They are reduced to form water

    • What is the final electron acceptor in aerobic cellular respiration?

  • Oxygen (correct)
  • Glucose
  • ATP
  • Pyruvate

    • What is the first step in glucose oxidation?

    <p>Glycolysis</p> Signup and view all the answers

    How is ATP produced in glycolysis?

    <p>By substrate-level phosphorylation</p> Signup and view all the answers

    What is the role of redox reactions in driving ATP formation?

    <p>They transfer electrons from one molecule to another</p> Signup and view all the answers

    Which process produces ATP from molecules with high potential energy?

    <p>Electron Transport Chain and Chemiosmosis</p> Signup and view all the answers

    What is the cellular currency for energy?

    <p>ATP</p> Signup and view all the answers

    What is the function of kinases?

    <p>Transferring phosphate groups</p> Signup and view all the answers

    What is the source of chemical potential energy in cells?

    <p>Electrons</p> Signup and view all the answers

    What is the result of hydrolysis of the bond between the two outermost phosphate groups in ATP?

    <p>Formation of ADP and Pi</p> Signup and view all the answers

    What happens to the released phosphate group during ATP hydrolysis?

    <p>It is transferred to a protein</p> Signup and view all the answers

    Which process uses oxygen as the final electron acceptor in the electron transport chain?

    <p>Oxidative phosphorylation</p> Signup and view all the answers

    Which enzyme complex is responsible for the production of ATP from ADP and Pi?

    <p>ATP synthase</p> Signup and view all the answers

    What is the main function of the electron transport chain?

    <p>To transfer electrons to oxygen and form water</p> Signup and view all the answers

    What is the most effective electron acceptor in the electron transport chain?

    <p>O2</p> Signup and view all the answers

    Which process occurs in the absence of oxygen and regenerates NAD+?

    <p>Fermentation</p> Signup and view all the answers

    How many ATP molecules are produced per glucose molecule in fermentation?

    <p>2</p> Signup and view all the answers

    Which process produces ATP in glycolysis and the citric acid cycle?

    <p>Substrate-level phosphorylation</p> Signup and view all the answers

    What is the final electron acceptor in cellular respiration?

    <p>Oxygen</p> Signup and view all the answers

    Which enzyme catalyzes the synthesis of fructose-1,6-biphosphate in glycolysis?

    <p>Phosphofructokinase</p> Signup and view all the answers

    Where does pyruvate processing occur in eukaryotic cells?

    <p>Mitochondrial matrix</p> Signup and view all the answers

    What molecules are produced during pyruvate processing?

    <p>Acetyl CoA, NADH, and CO2</p> Signup and view all the answers

    Which step of glucose oxidation occurs in the citric acid cycle?

    <p>Electron transport chain</p> Signup and view all the answers

    Which of the following is true about cellular respiration?

    <p>It requires high-energy electrons for generating ATP</p> Signup and view all the answers

    What is the main function of catabolic pathways in metabolism?

    <p>To break down molecules and produce ATP</p> Signup and view all the answers

    Which molecules are commonly used as substrates for cellular respiration?

    <p>Proteins, carbohydrates, and fats</p> Signup and view all the answers

    What are the intermediates in glycolysis and the citric acid cycle derived from?

    <p>Carbohydrates</p> Signup and view all the answers

    Which molecules found in carbohydrate metabolism are used to synthesize macromolecules?

    <p>Glycogen and starch</p> Signup and view all the answers

    In what order do cells use carbohydrates, fats, and proteins for ATP production?

    <p>Carbohydrates, fats, proteins</p> Signup and view all the answers

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