Cellular Respiration and Energy Production Quiz
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Questions and Answers

What is the definition of a calorie?

  • The amount of energy needed to raise the temperature of 1 gram of water by 5 degrees Celsius
  • The amount of energy needed to raise the temperature of 1 pound of water by 1 degree Celsius
  • The amount of energy needed to raise the temperature of 1 gram of water by 10 degrees Celsius
  • The amount of energy needed to raise the temperature of 1 gram of water by 1 degree Fahrenheit (correct)

    • What is the purpose of the Krebs Cycle in cellular respiration?

  • To transport electrons through the electron transport chain
  • To release energy by breaking down glucose and other food molecules in the presence of oxygen
  • To break down glucose into pyruvic acid
  • To extract energy from the breakdown of pyruvic acid in a series of energy-extracting reactions (correct)

    • What is the role of NAD+ in glycolysis?

  • NAD+ is the final electron acceptor in the electron transport chain
  • NAD+ is a product of the Krebs Cycle
  • NAD+ is a coenzyme that is involved in the oxidation of glucose to pyruvic acid (correct)
  • NAD+ is the electron carrier involved in the anaerobic process of fermentation

    • What is the difference between aerobic and anaerobic cellular respiration?

    <p>Both a and b are correct</p> Signup and view all the answers

    What is the purpose of the matrix in the mitochondrion?

    <p>The matrix is the innermost compartment of the mitochondrion</p> Signup and view all the answers

    Which of the following is NOT a key characteristic of the Krebs Cycle in cellular respiration?

    <p>It directly oxidizes glucose to release energy</p> Signup and view all the answers

    Suppose a cell is undergoing fermentation due to a lack of oxygen. Which of the following electron carriers would NOT be involved in this process?

    <p>NADP+</p> Signup and view all the answers

    Which of the following statements about the relationship between cellular respiration and the calorie is INCORRECT?

    <p>The calorie is a unit of energy, while cellular respiration is the process of releasing that energy from food molecules</p> Signup and view all the answers

    Suppose a cell is undergoing aerobic cellular respiration. Which of the following processes would NOT be occurring within the mitochondrial matrix?

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

    If a cell is unable to perform aerobic cellular respiration due to a lack of oxygen, which of the following statements about the cell's energy production would be MOST accurate?

    <p>The cell will switch to anaerobic respiration, producing lactic acid as a byproduct</p> Signup and view all the answers

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