Energy Generation in the Body: Electron Transport Chain and CAC
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Questions and Answers

Where does the electron transport chain take place in the cell?

  • Nucleus
  • Inner mitochondrial membrane (correct)
  • Cytoplasm
  • Endoplasmic reticulum

    • What is the main function of the electron transport chain?

  • Generation of ATP (correct)
  • Synthesis of glucose
  • Transport of genetic material
  • Production of enzymes

    • Which molecules donate electrons to the electron transport chain?

  • ATP and ADP
  • Glucose and fructose
  • NADH and FADH2 (correct)
  • NAD+ and FAD

    • What is the final electron acceptor in the electron transport chain in aerobic cells?

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

    Which organelle is vital for the functioning of the electron transport chain?

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

    What is the role of the respiratory chain in the electron transport chain?

    <p>Transferring electrons from substrates to molecular oxygen</p> Signup and view all the answers

    Where does the citric acid cycle take place?

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

    What is the main function of the citric acid cycle?

    <p>To completely oxidize Acetyl CoA to CO2</p> Signup and view all the answers

    Which of the following is NOT an inhibitor of the citric acid cycle?

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

    What process is responsible for the phosphorylation of ADP to ATP coupled to electron transfer from a substrate to molecular oxygen?

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

    Which theory explains how the electron transport chain and oxidative phosphorylation are coupled?

    <p>Chemiosmotic theory</p> Signup and view all the answers

    What are the electron donors in the electron transport chain?

    <p>NADH, FADH2</p> Signup and view all the answers

    What is the reservoir for oxidative phosphorylation according to the chemiosmotic theory?

    <p>Transmembrane differences in proton concentration</p> Signup and view all the answers

    What is the main function of ATP synthase in oxidative phosphorylation?

    <p>To phosphorylate ADP to ATP</p> Signup and view all the answers

    What drives the formation of ATP in oxidative phosphorylation according to the chemiosmotic theory?

    <p>$H^+$ concentration gradient and charge separation</p> Signup and view all the answers

    How many protons are required to synthesize 1 ATP in oxidative phosphorylation?

    <p>4 protons</p> Signup and view all the answers

    Which of the following does NOT generate ATP in the citric acid cycle?

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

    What is the main function of the electron transport chain?

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

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