Test On Enzymes! Knowledge Trivia Quiz

17 Questions | Total Attempts: 128

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Test On Enzymes! Knowledge Trivia Quiz

Would you like to take this test on enzymes? This quiz will provide you with knowledge of enzymes. As it relates to this quiz, you need to understand what term is utilized to describe the energy necessary to get started, what accelerates a chemical reaction, how enzymes affect the reactions in living cells, and hydrogen ion concentration. This quiz will teach you more about enzymes. You will do a fantastic job on this quiz.


Questions and Answers
  • 1. 
    What is the term used to describe the energy needed to get a reaction started?
    • A. 

      Adhesion energy

    • B. 

      Activation energy

    • C. 

      Cohesion energy

    • D. 

      Chemical energy

  • 2. 
    Which of the following statements about enzymes is NOT true? a. Enzymes work best at a specified pH. b. All enzymes have the same shape as their substrates.  c. Enzymes are proteins.         d. The shape of an enzyme allows it to do its job. 
    • A. 

      Enzymes work best at a specified pH

    • B. 

      All enzymes have the same shaps as their substrates

    • C. 

      Enzymes are proteins

    • D. 

      The shape of an enzyme allows it to do its job

  • 3. 
    Which of the following statements is true about catalysts? a. Catalysts slow down the rate of chemical reactions. b. All catalysts are enzymes. c. Catalysts are used up during a chemical reaction. d. Catalysts lower the activation energy of a chemical reaction.
    • A. 

      Catalysts slow down the rate of chemical reactions

    • B. 

      All catalysts are enzymes

    • C. 

      Catalysts are used up during a chemical reaction

    • D. 

      Catalysts lower the activation energy of a chemical reaction

  • 4. 
    A substance that accelerates the rate of a chemical reaction is called a(an)
    • A. 

      Catalyst

    • B. 

      Lipid

    • C. 

      Molecule

    • D. 

      Protein

  • 5. 
    Enzymes affect the reactions in living cells by changing the
    • A. 

      Products of the reaction

    • B. 

      Speed of the reaction

    • C. 

      Temperature of the reaction

    • D. 

      PH of the reaction

  • 6. 
    Without enzymes, the chemical reactions in the body would a. happen too fast. b. occur at much the same rate as they do with enzymes. c. require a different pH. d. occur too slowly to support life processes.
    • A. 

      Happen too fast

    • B. 

      Occur at much the same rate as they do with enzymes

    • C. 

      Require a different pH

    • D. 

      Occur too slowly to support life processes

  • 7. 
    Refer to the graph above. Reaction 3 in the graph
    • A. 

      Probably occurred in the presence of a catalyst

    • B. 

      Requires a greater activation energy than reaction 2

    • C. 

      Is the same as reaction 1, but faster

    • D. 

      Takes longer than reaction 2

  • 8. 
    Refer to the graph above. Which of these statements regarding the graph is true?
    • A. 

      Reaction 2 occurs faster than reaction 3 because reaction 2 requires more energy than reaction 3

    • B. 

      The difference in the graphs shown for reaction 2 and reaction 3 is due to a difference in the activation energy needed for these two reactions.

    • C. 

      Reactant X contains more energy at the beginning of the reaction than product Z has after the reaction

    • D. 

      All of the answer choices are correct

  • 9. 
    Two students conduct an experiment in which they measure the concentration of an enzyme in a test tube at 1 minute intervals over the course of an enxymatic reaction.  Each of the students makes a prediction about what will happen to the enzyme concentration as the reaction progresses.   Student 1 predicts that the concentration of the enzyme in the test tube will decrease as the reaction progresses.   Student 2 predicts that the concentration of the enzyme in the test tube will stay the same as the reaction progresses.   Which student’s prediction is correct, and why?
    • A. 

      Student 1; enzymes are depleted as a reaction progresses

    • B. 

      Student 1; enzymes are not depleted as a reaction progresses

    • C. 

      Student 2; enzymes are depleted as a reaction progresses

    • D. 

      Student 2; enzymes are not depleted as a reaction progresses

  • 10. 
    When the pH in a stomach increases from 2 to 4, how does the hydrogen ion concentration change? a. It increases by a factor of 2. b. It increases by a factor of 100. c. It decreases by a factor of 2. d. It decreases by a factor of 100.
    • A. 

      It increases by a factor of 2

    • B. 

      It increases by a factor of 100

    • C. 

      It decreases by a factor of 2

    • D. 

      It decreases by a factor of 100

  • 11. 
    When the pH in a stomach decreases, what is happening?
    • A. 

      H+ ions are increasing ONLY.

    • B. 

      OH- ions are increasing ONLY.

    • C. 

      H+ ions are decreasing ONLY.

    • D. 

      OH- ions are decreasing ONLY.

    • E. 

      H+ ions are increasing & OH- ions are decreasing.

    • F. 

      H+ ions are decreasing & OH- ions are increasing.

  • 12. 
    Which statement most accurately describes the induced fit model of enzyme function?
    • A. 

      Substrate binding is not dependent upon the shape of the active site

    • B. 

      Competitive inhibitors block the substrate from the active site

    • C. 

      Substrate binding slightly changes the shape of the enzyme

    • D. 

      An enzyme creates a permanent bond with the substrate

  • 13. 
    How do enzymes speed up chemical reactions?
    • A. 

      By reducing activation energy

    • B. 

      By reducing activation energy

    • C. 

      By increasing activation energy

    • D. 

      By increasing energy producted by the reaction

  • 14. 
    The active site of an enzyme is
    • A. 

      Where the reactant fits into the enzyme

    • B. 

      Where the enzymes and molecule bond together

    • C. 

      When the balance of living organisms affects the enzyme

    • D. 

      The same shape in all enzymes

  • 15. 
    Which of the following factors affects enzyme activity?
    • A. 

      Environmental factors

    • B. 

      Cofactors (Coenzymes)

    • C. 

      Enzyme Inhibitors

    • D. 

      All of the answer choices are correct

  • 16. 
    Which of the following is the best definition for a substrate?
    • A. 

      A reactant that an enzyme binds with to carry out a reaction

    • B. 

      An enzyme that has an active site

    • C. 

      A reactant that an active site acts on

    • D. 

      None of the answer choices are correct

  • 17. 
    Which of the following is a characteristic of an enzyme?
    • A. 

      They are specific

    • B. 

      They are reusable

    • C. 

      They are not permanently changed

    • D. 

      All of the answer choices are correct

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