Chapter 7: Mitochondria and Cellular Respiration
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Questions and Answers

What is the final electron acceptor in obligate anaerobes during anaerobic respiration?

  • Nitrogen
  • Carbon dioxide
  • Oxygen
  • Sulfate (correct)

    • Which process can human muscle cells switch to in the absence of oxygen?

  • Citric acid cycle
  • Glycolysis
  • Fermentation (correct)
  • Aerobic respiration

    • Which molecules are consumed as fuel in cellular respiration?

  • Fats only
  • Carbohydrates only
  • Proteins only
  • Carbohydrates, fats, and proteins (correct)

    • What becomes oxidized during cellular respiration?

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

    What is the function of dehydrogenase in cellular respiration?

    <p>Transfer of electrons to NADH</p> Signup and view all the answers

    What is the product of aerobic cellular respiration when oxygen is the final electron acceptor?

    <p>$H2O$</p> Signup and view all the answers

    Which process occurs in the absence of oxygen during cellular respiration?

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

    Where does the citric acid cycle occur in eukaryotic cells?

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

    What is the main function of the electron transport chain in cellular respiration?

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

    Which type of cells can't survive in the presence of oxygen?

    <p>$Obligate$ anaerobes</p> Signup and view all the answers

    Where does glycolysis occur?

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

    What is the final electron acceptor in the electron transport chain?

    <p>Oxygen (O2)</p> Signup and view all the answers

    Which stage of respiration involves the formation of acetyl CoA?

    <p>Pyruvate oxidation</p> Signup and view all the answers

    What is the main function of ATP synthase in cellular respiration?

    <p>To generate a proton gradient</p> Signup and view all the answers

    Where does oxidative phosphorylation take place in eukaryotic cells?

    <p>Inner mitochondrial membrane</p> Signup and view all the answers

    Which molecule is NOT directly involved in the Citric Acid Cycle?

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

    What is the function of coenzyme A in cellular respiration?

    <p>To carry acetyl groups to the Citric Acid Cycle</p> Signup and view all the answers

    Which stage of respiration produces the most ATP?

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

    Which stage of respiration produces the most ATP?

    <p>Electron transport and produce ATP (Chemiosmosis)</p> Signup and view all the answers

    What is the main function of the electron transport chain in cellular respiration?

    <p>To generate a proton gradient for ATP synthesis</p> Signup and view all the answers

    What is the final electron acceptor in aerobic cellular respiration?

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

    Where does glycolysis occur?

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

    What is the product of aerobic cellular respiration when oxygen is the final electron acceptor?

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

    Which stage of respiration involves the formation of acetyl CoA?

    <p>Pyruvate oxidation</p> Signup and view all the answers

    What becomes oxidized during cellular respiration?

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

    What is the function of coenzyme A in cellular respiration?

    <p>$To$ $oxidize$ $pyruvate$ $and$ $transfer$ $the$ $acetyl$ $group$ $to$ $the$ $Citric$ $Acid$ $Cycle$</p> Signup and view all the answers

    What is the main function of ATP synthase in cellular respiration?

    <p>$To$ $convert$ $ADP$ $and$ $Pi$ $into$ $ATP$</p> Signup and view all the answers

    What is the function of dehydrogenase in cellular respiration?

    <p>To carry electrons to the electron transport chain</p> Signup and view all the answers

    What is the final electron acceptor in anaerobic respiration for obligate anaerobes?

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

    What is the main difference between obligate anaerobes and facultative anaerobes?

    <p>Facultative anaerobes can survive with or without oxygen, while obligate anaerobes can only survive in the presence of oxygen.</p> Signup and view all the answers

    Which molecule is oxidized during cellular respiration?

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

    What is the primary function of dehydrogenase in cellular respiration?

    <p>To oxidize NAD+ to NADH</p> Signup and view all the answers

    Where does the citric acid cycle occur in eukaryotic cells?

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

    Which process occurs in the absence of oxygen during cellular respiration?

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

    What is the function of coenzyme A in cellular respiration?

    <p>To transport acetyl groups to the citric acid cycle</p> Signup and view all the answers

    What becomes reduced during cellular respiration?

    <p>$NAD^+$</p> Signup and view all the answers

    What is the main function of ATP synthase in cellular respiration?

    <p>To convert ADP to ATP using the proton gradient</p> Signup and view all the answers

    What is the primary function of the electron transport chain in cellular respiration?

    <p>To generate a proton gradient for ATP synthesis</p> Signup and view all the answers

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