Ch 6 Energy & Enzyme Quiz

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Energy Quizzes & Trivia
AP Bio Ch 6 Outline Quiz

  
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  • 1. 
    Endergonic reactions
    • A. 

      Are always coupling reactions.

    • B. 

      Have a negative DG and occur spontaneously.

    • C. 

      Can only occur if there is an input of energy.

    • D. 

      Have products with less free energy than the reactants.

    • E. 

      All of the above are correct.


  • 2. 
    Coupling occurs when the energy released by an exergonic reaction is
    • A. 

      Used to drive another exergonic reaction.

    • B. 

      Used to drive an endergonic reaction.

    • C. 

      Lost as nonusable heat to the environment.

    • D. 

      Used to decrease the entropy of the universe.

    • E. 

      All of the above are correct.


  • 3. 
    Which of the following is characteristic of enzymes?
    • A. 

      They lower the energy of activation of a reaction by binding the substrate.

    • B. 

      They raise the energy of activation of a reaction by binding the substrate.

    • C. 

      They lower the amount of energy present in the substrate.

    • D. 

      They raise the amount of energy present in the substrate.


  • 4. 
    An enzyme is generally named by adding _____ to the end of the name of the ______.
    • A. 

      "-ose," cell in which it is found

    • B. 

      "-ase," cell in which it is found

    • C. 

      "-ose," substrate

    • D. 

      "-ase," substrate

    • E. 

      "-ase," coenzyme


  • 5. 
    Which statement describes the currently accepted theory of how an enzyme and its substrate fit together?
    • A. 

      As the product is released, the enzyme breaks down.

    • B. 

      The enzyme is like a key that fits into the substrate, which is like a lock.

    • C. 

      The active site is permanently changed by its interaction with the substrate.

    • D. 

      As the substrate binds to the enzyme, the shape of the active site changes to accommodate the reaction.


  • 6. 
    A coenzyme is
    • A. 

      An ionic cofactor that interacts with an enzyme to allow it to work.

    • B. 

      A protein cofactor that interacts with an enzyme to allow it to work.

    • C. 

      A nonprotein organic cofactor that interacts with an enzyme to allow it to work.

    • D. 

      An ionic cofactor that interacts with an enzyme to inhibit it.

    • E. 

      A protein cofactor that interacts with an enzyme to inhibit it.


  • 7. 
    Which organelles contain functioning ATP synthetase complexes in their membranes?
    • A. 

      Golgi complexes and lysosomes

    • B. 

      Mitochondria and chloroplasts

    • C. 

      Endoplasmic reticulum and vesicles

    • D. 

      Vacuoles and vesicles

    • E. 

      Mitochondria and endoplasmic reticulum


  • 8. 
    Since energy is completely used up by a cell, the cell requires more energy to enter it in the form of food.
    • A. 

      True

    • B. 

      False


  • 9. 
    All organisms produce heat during their metabolic processes.
    • A. 

      True

    • B. 

      False


  • 10. 
    The ultimate source of nearly all the energy that is used to support life is sunlight.
    • A. 

      True

    • B. 

      False


  • 11. 
    The energy of activation is the energy that must be supplied so that molecules are able to interact with each other in a chemical reaction.
    • A. 

      True

    • B. 

      False


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