Regulation of Enzyme Activity
10 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which of the following is a type of enzyme that can be regulated by altering its activity?

  • Isoenzyme
  • Holoenzyme
  • Apoenzyme
  • Allosteric Enzyme (correct)
  • What is the purpose of feedback inhibition in enzyme regulation?

  • To decrease the activity of an enzyme (correct)
  • To convert a proenzyme to an active enzyme
  • To modify the structure of an enzyme
  • To increase the activity of an enzyme
  • What is the term for the process of converting an inactive proenzyme into an active enzyme?

  • Activation
  • Proteolysis (correct)
  • Denaturation
  • Protein modification
  • Which of the following is an example of protein modification?

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

    What is the advantage of modifying the activity of an existing enzyme rather than synthesizing a new one?

    <p>It is a faster and more energy-efficient way to regulate enzyme activity</p> Signup and view all the answers

    What is the primary advantage of changing the activity of a pre-existing enzyme?

    <p>To rapidly respond to changes in the cellular environment</p> Signup and view all the answers

    Which of the following mechanisms of enzyme regulation involves the binding of a molecule to a non-active site on the enzyme?

    <p>Allosteric regulation</p> Signup and view all the answers

    What is the purpose of proenzymes in the regulation of enzyme activity?

    <p>To provide an inactive form of the enzyme that can be rapidly activated</p> Signup and view all the answers

    Which of the following types of regulation is a slow and long-term response to changes in the cellular environment?

    <p>Transcriptional regulation</p> Signup and view all the answers

    Which of the following mechanisms of enzyme regulation involves the covalent modification of an amino acid residue on the enzyme?

    <p>Protein modification</p> Signup and view all the answers

    Study Notes

    Enzyme Activity Regulation

    • Modulating the activity of an existing enzyme in the cell is the fastest way to regulate enzyme activity.

    Common Methods of Enzyme Regulation

    • Allosteric Enzymes: a type of enzyme that can be regulated through allosteric interactions.
    • Feedback Inhibition: a mechanism where the end product of an enzyme-catalyzed reaction inhibits the enzyme's activity.
    • Proenzymes (Zymogen): an inactive precursor of an enzyme that can be converted to an active form.
    • Protein Modification: a method of regulating enzyme activity through post-translational modifications, such as phosphorylation or ubiquitination.

    Enzyme Activity Regulation

    • Modulating the activity of an existing enzyme in the cell is the fastest way to regulate enzyme activity.

    Common Methods of Enzyme Regulation

    • Allosteric Enzymes: a type of enzyme that can be regulated through allosteric interactions.
    • Feedback Inhibition: a mechanism where the end product of an enzyme-catalyzed reaction inhibits the enzyme's activity.
    • Proenzymes (Zymogen): an inactive precursor of an enzyme that can be converted to an active form.
    • Protein Modification: a method of regulating enzyme activity through post-translational modifications, such as phosphorylation or ubiquitination.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Learn about the different ways to modulate the activity of pre-existing enzymes in a cell, including allosteric enzymes, feedback inhibition, proenzymes, and protein modification.

    More Like This

    Use Quizgecko on...
    Browser
    Browser