Life Science Review For Semester 1 Final: Enzymes And Energy (With Answers)

36 Questions | Total Attempts: 45

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Life Science Review For Semester 1 Final: Enzymes And Energy (With Answers) - Quiz

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Questions and Answers
  • 1. 
    What does a catalyst do to a reaction?
    • A. 

      Force it to happen

    • B. 

      Speed it up

    • C. 

      Prevent it from happening

    • D. 

      All of the above

    • E. 

      None of the above

  • 2. 
    NWhat do we call biological catalysts?
    • A. 

      Inhibitors

    • B. 

      Metabolism

    • C. 

      Enzymes

    • D. 

      All of the above

    • E. 

      None of the above

  • 3. 
    Enzymes are what type of biological molecule?
    • A. 

      Protein

    • B. 

      Lipid

    • C. 

      Nucleic acid

    • D. 

      All of the above

    • E. 

      None of the above

  • 4. 
    What is the function of an enzyme?
    • A. 

      Make a chemical reaction happen

    • B. 

      Speed up a chemical reaction

    • C. 

      Carry oxygen in blood

    • D. 

      All of the above

    • E. 

      None of the above

  • 5. 
    What is the activation energy for a chemical reaction?
    • A. 

      The amount of energy generated by the reaction

    • B. 

      The amount of energy required to get the reaction started

    • C. 

      The amount of energy required to stop the reaction

    • D. 

      All of the above

    • E. 

      None of the above

  • 6. 
    What does an enzyme do to the activation energy of a chemical reaction?
    • A. 

      Increase it

    • B. 

      Decrease it

    • C. 

      Nothing

    • D. 

      All of the above

    • E. 

      None of the above

  • 7. 
    What do we call the starting materials for a chemical reaction?
    • A. 

      Reactants

    • B. 

      Products

    • C. 

      Catalysts

    • D. 

      All of the above

    • E. 

      None of the above

  • 8. 
    What do we call the materials which are made in a chemical reaction?
    • A. 

      Reactants

    • B. 

      Products

    • C. 

      Catalysts

    • D. 

      All of the above

    • E. 

      None of the above

  • 9. 
    Is an enzyme used up during a chemical reaction?
    • A. 

      Yes

    • B. 

      No

    • C. 

      It depends on the reaction

    • D. 

      It depends on if there is an inhibitor present

    • E. 

      None of the above

  • 10. 
    What happens in a hydrolysis reaction?
    • A. 

      Water is split

    • B. 

      Water is used to split another molecule

    • C. 

      An enzyme is prevented from catalyzing a reaction

    • D. 

      All of the above

    • E. 

      None of the above

  • 11. 
    What do we call the part of the enzyme which binds the substrate?
    • A. 

      Active site

    • B. 

      Allosteric site

    • C. 

      Catalyst

    • D. 

      All of the above

    • E. 

      None of the above

  • 12. 
    What is special about the shape of an enzyme's active site?
    • A. 

      It is very small

    • B. 

      It can be denatured using high temperatures

    • C. 

      It fits the substrate shape exactly

    • D. 

      All of the above

    • E. 

      None of the above

  • 13. 
    What do we call the reactants in a chemical reaction when an enzyme is used to speed up the reaction?
    • A. 

      Reactants

    • B. 

      Substrates

    • C. 

      Inhibitors

    • D. 

      All of the above

    • E. 

      None of the above

  • 14. 
    Where does a substrate bind an enzyme?
    • A. 

      Allosteric site

    • B. 

      Inhibitor site

    • C. 

      Active site

    • D. 

      All of the above

    • E. 

      None of the above

  • 15. 
    Can an enzyme have more than one substrate?
    • A. 

      Yes, but the substrates must be similar in shape

    • B. 

      Yes, an enzyme can bind two molecules at once during a synthesis reaction

    • C. 

      Yes, some enzymes can change the shape of their active site to fit several substrates

    • D. 

      All of the above

    • E. 

      None of the above

  • 16. 
    Which model of enzyme activity states that an enzyme's active site has a shape which matches the substrate site very precisely?
    • A. 

      Lock and key model

    • B. 

      Induced fit model

    • C. 

      Catalyst model

    • D. 

      All of the above

    • E. 

      None of the above

  • 17. 
    Which model of enzyme activity states that an enzyme's active site will change shape slightly to fit one or more substrates when they bind?
    • A. 

      Lock and key model

    • B. 

      Induced fit model

    • C. 

      Catalyst model

    • D. 

      All of the above

    • E. 

      None of the above

  • 18. 
    What do we call a molecule that binds to an enzyme and prevents the enzyme from catalyzing a reaction?
    • A. 

      Reactant

    • B. 

      Inhibitor

    • C. 

      Active site

    • D. 

      All of the above

    • E. 

      None of the above

  • 19. 
    YmAll of the energy on Earth comes from what source?
    • A. 

      Sun

    • B. 

      Chloroplasts

    • C. 

      Chemical reactions

    • D. 

      All of the above

    • E. 

      None of the above

  • 20. 
    What organelle present in plants converts light energy into chemical energy?
    • A. 

      Mitochondrion

    • B. 

      Chloroplast

    • C. 

      Ribosome

    • D. 

      All of the above

    • E. 

      None of the above

  • 21. 
    Which of the following substances is a reactant for photosynthesis?
    • A. 

      Carbon dioxide

    • B. 

      Oxygen

    • C. 

      Sugar

    • D. 

      All of the above

    • E. 

      None of the above

  • 22. 
    Which of the following substances is a reactant for photosynthesis?
    • A. 

      Water

    • B. 

      Carbon dioxide

    • C. 

      Light

    • D. 

      All of the above

    • E. 

      None of the above

  • 23. 
    Which of the following substances is a product of photosynthesis?
    • A. 

      Water

    • B. 

      Carbon dioxide

    • C. 

      Light

    • D. 

      All of the above

    • E. 

      None of the above

  • 24. 
    Which of the following substances is a product of photosynthesis?
    • A. 

      Water

    • B. 

      Carbon dioxide

    • C. 

      Oxygen

    • D. 

      All of the above

    • E. 

      None of the above

  • 25. 
    Which of the following substances is a product of photosynthesis?
    • A. 

      ATP

    • B. 

      Sugar

    • C. 

      Oxygen

    • D. 

      All of the above

    • E. 

      None of the above

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