Sebha University by Esmaeil.B Musa: Cell Oxidation and ATP Synthesis
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Questions and Answers

What is reduced to H2O as O2 accepts electrons from the chain?

  • NADH
  • ATP synthase
  • O2 (correct)
  • Protons
  • What is the energy drop during reduction potential as electrons pass through each of the large membrane-spanning complexes in the chain used for?

  • Waste disposal
  • ATP synthesis (correct)
  • Preventing electron transfer
  • Movement of protons along the membrane
  • What is the role of the membrane in the electron transport chain regarding protons?

  • Transfers protons
  • Permeable to protons
  • Impermeable to protons (correct)
  • Generates protons
  • Which component generates the electrochemical gradient in mitochondria?

    <p>Proton pumps (C)</p> Signup and view all the answers

    What is used by American Indians as a fish poison and blocks electron transfer from NADH to ubiquinone?

    <p>Rotenone (C)</p> Signup and view all the answers

    What effect does proton influx through channels (Fo) have on ATP synthesis?

    <p>Promotes ATP synthesis (D)</p> Signup and view all the answers

    What causes the high concentration of H+ outside the inner mitochondrial membrane?

    <p>Proton pumps activity (A)</p> Signup and view all the answers

    What is prevented by the impermeability of the membrane to protons?

    <p>$H^+$ diffusion into the matrix (D)</p> Signup and view all the answers

    Where is LDH-5 predominantly found in the body?

    <p>Liver (D)</p> Signup and view all the answers

    Which enzyme is primarily located on the outer layer of the cell membrane and catalyzes the hydrolysis of organic phosphate esters?

    <p>Alkaline Phosphatase (B)</p> Signup and view all the answers

    In which condition is ALP-1 increased?

    <p>Obstructive jaundice (C)</p> Signup and view all the answers

    Which enzyme Isoenzyme increases in kidney disorders?

    <p>ALP-2 (A)</p> Signup and view all the answers

    What does an increase in Salivary Amylase levels indicate?

    <p>Parotitis/Mumps (D)</p> Signup and view all the answers

    Which organ has ALP-4 increased after gastrectomy surgery?

    <p>Intestine (B)</p> Signup and view all the answers

    In which trimester of pregnancy does ALP-3 in placenta increase?

    <p>2nd trimester (D)</p> Signup and view all the answers

    In which condition is ALP-5 increased?

    <p>Kidney disorders (C)</p> Signup and view all the answers

    What does an increase in Pancreatic Amylase levels indicate?

    <p>Pancreatitis (A)</p> Signup and view all the answers

    Which enzyme is increased in the liver and associated with hepatitis?

    <p>Amylase (C)</p> Signup and view all the answers

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