6 Major Classes of Enzymes Flashcards
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Questions and Answers

What type of reaction do oxidoreductases catalyze?

  • Hydrolysis reactions
  • Isomerization reactions
  • Group transfer reactions
  • Oxidation reduction reactions (correct)
  • What do transferases catalyze?

  • Synthesis of bonds
  • Hydrolysis reactions
  • Group transfer reactions (correct)
  • Oxidation reduction reactions
  • Hydrolases are involved in which type of reactions?

  • Group transfer reactions
  • Isomerization reactions
  • Hydrolysis reactions (correct)
  • Biosynthetic reactions
  • What is the primary function of lyases?

    <p>Formation of bonds without hydrolysis or oxidation</p> Signup and view all the answers

    Isomerases are responsible for which process?

    <p>Creating isomers of a molecule</p> Signup and view all the answers

    What do ligases synthesize?

    <p>C-C, C-S, C-O, and C-N bonds</p> Signup and view all the answers

    Study Notes

    Major Classes of Enzymes

    • Oxidoreductases

      • Catalyze oxidation-reduction (redox) reactions.
      • At least one substrate is oxidized, while another is reduced.
    • Transferases

      • Facilitate group transfer reactions.
      • Responsible for transferring functional groups from one molecule to another.
    • Hydrolases

      • Involved in hydrolysis reactions.
      • Cleave C-O, C-N, and C-S bonds by adding water (H2O), contributing OH- and H+ to the bond atoms.
    • Lyases

      • Break C-C, C-O, C-N, and C-S bonds.
      • Action occurs through means other than hydrolysis or oxidation.
    • Isomerases

      • Rearrange atoms within a molecule.
      • Create isomers from the original substance without adding or removing atoms.
    • Ligases

      • Catalyze the synthesis of C-C, C-S, C-O, and C-N bonds.
      • Reactions are coupled with the cleavage of high-energy phosphate bonds from ATP or other nucleotides.

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    Description

    Test your knowledge on the six major classes of enzymes with this flashcard quiz. Each card features a specific enzyme class along with its definition, allowing for a quick review of important concepts in biochemistry. Perfect for students preparing for exams or anyone interested in the biochemical processes.

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