Enzyme Classification History
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Questions and Answers

Which of the following is the correct way to name an enzyme?

  • Use the name of the enzyme's function
  • Use the name of the enzyme's structure
  • Add the suffix '-ase' to the end of the product name
  • Add the suffix '-ase' to the end of the substrate name (correct)

    • What is the main mechanism by which enzymes catalyze reactions?

  • Enzymes provide an alternative reaction pathway
  • Enzymes change the equilibrium constant of the reaction
  • Enzymes increase the activation energy of the reaction
  • Enzymes decrease the activation energy of the reaction (correct)

    • Which of the following is an example of an enzyme class?

  • Urease
  • Protease (correct)
  • Alcohol dehydrogenase
  • Phosphoglucose isomerase

    • What type of reaction does alcohol dehydrogenase catalyze?

    <p>Oxidation-reduction (B)</p> Signup and view all the answers

    Which of the following is a characteristic of allosteric enzymes?

    <p>They have more than one binding site (C)</p> Signup and view all the answers

    What is the purpose of enzyme immobilization?

    <p>To restrict enzyme mobility in a fixed space (D)</p> Signup and view all the answers

    What is the term used to describe RNA molecules that have catalytic activity?

    <p>Ribozymes (C)</p> Signup and view all the answers

    What is a holoenzyme composed of?

    <p>Apoenzyme + Cofactor (B)</p> Signup and view all the answers

    What are examples of non-protein cofactors for enzymes?

    <p>Vitamins (D)</p> Signup and view all the answers

    What is the region in an enzyme that targets a specific biochemical reaction due to its molecular conformation?

    <p>Active Site (C)</p> Signup and view all the answers

    Which effect describes the enzyme holding substrates in close proximity to each other and the enzyme's active site?

    <p>Proximity Effect (C)</p> Signup and view all the answers

    What term is used for enzymes that occur in several different molecular forms but catalyze the same reaction?

    <p>Isozymes (B)</p> Signup and view all the answers

    What is the primary purpose of enzyme classification?

    <p>To organize enzymes based on the reactions they catalyze (A)</p> Signup and view all the answers

    What is the key characteristic of a catalyst as described in the text?

    <p>A catalyst provides an alternative pathway with lower activation energy (A)</p> Signup and view all the answers

    Which of the following is an example of an enzyme-catalyzed reaction given in the text?

    <p>$ATP + L-tyrosine + tRNA_{Tyr} = AMP + diphosphate + L-tyrosyl-tRNA_{Tyr}$ (A)</p> Signup and view all the answers

    What is the primary purpose of enzyme nomenclature as described in the text?

    <p>To name and number enzymes in a standardized way (A)</p> Signup and view all the answers

    What is the key characteristic that defines the six major classes of enzymes?

    <p>The type of chemical reaction the enzyme catalyzes (A)</p> Signup and view all the answers

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