Enzymes Quiz
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Questions and Answers

What are the molecules upon which enzymes act called?

  • Products
  • Catalysts
  • Substrates (correct)
  • Reactants
  • What is the study of enzymes called?

  • Enzymology (correct)
  • Biochemistry
  • Enzymatics
  • Catalysis
  • What is the unique three-dimensional structure of an enzyme responsible for?

  • Lowering activation energy (correct)
  • Altering the substrate
  • Increasing equilibrium of a reaction
  • Changing the products
  • How many biochemical reaction types are enzymes known to catalyze?

    <p>More than 5,000</p> Signup and view all the answers

    What distinguishes enzymes from most other catalysts?

    <p>Their high specificity</p> Signup and view all the answers

    What is the unique property of orotidine 5'-phosphate decarboxylase as mentioned in the text?

    <p>It allows a reaction that would otherwise take millions of years to occur in milliseconds</p> Signup and view all the answers

    What are catalytic RNA molecules called?

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

    What is the field of pseudoenzyme analysis focused on?

    <p>Recognizing enzymes that have lost the ability to carry out biological catalysis</p> Signup and view all the answers

    What is responsible for an enzyme's specificity?

    <p>Its unique three-dimensional structure</p> Signup and view all the answers

    What is the main role of enzymes as biological catalysts?

    <p>Accelerating chemical reactions by lowering activation energy</p> Signup and view all the answers

    Study Notes

    Enzymes

    • Substrates are the molecules upon which enzymes act.
    • Enzymology is the study of enzymes.
    • The unique three-dimensional structure of an enzyme is responsible for its specificity.
    • Enzymes are known to catalyze over 4,000 biochemical reaction types.
    • Enzymes are distinguished from most other catalysts by their high degree of substrate specificity.
    • Orotidine 5'-phosphate decarboxylase has the unique property of being one of the most proficient enzymes, releasing almost all of the energy available from the reaction.
    • Catalytic RNA molecules are called ribozymes.
    • The field of pseudoenzyme analysis is focused on identifying and characterizing proteins that resemble enzymes but lack catalytic activity.
    • An enzyme's specificity is responsible for its ability to catalyze a specific reaction or set of reactions.
    • The main role of enzymes as biological catalysts is to increase the rates of chemical reactions in living organisms.

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    Description

    Test your knowledge about enzymes, the proteins that act as biological catalysts, accelerating chemical reactions in living organisms. Explore the role of enzymes in metabolic pathways and their importance in sustaining life.

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