Enzyme Inhibition Quiz
18 Questions
1 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

What type of enzyme inhibition occurs when the inhibitor binds to a different part of the enzyme, changing its shape and decreasing the reaction rate?

  • Reversible inhibition
  • Competitive inhibition
  • Feedback inhibition
  • Non-competitive inhibition (correct)

    • Which type of inhibition occurs when the end product of a reaction binds to the enzyme at the start of the pathway, stopping the pathway until the end product concentration decreases?

  • Non-competitive inhibition
  • Feedback inhibition (correct)
  • Competitive inhibition
  • Reversible inhibition

    • What is the key difference between competitive and non-competitive inhibition?

  • Competitive inhibitors decrease the Vmax, while non-competitive inhibitors decrease the Km.
  • Competitive inhibitors bind to the active site, while non-competitive inhibitors bind elsewhere on the enzyme. (correct)
  • Competitive inhibitors are reversible, while non-competitive inhibitors are irreversible.
  • Competitive inhibitors increase the reaction rate, while non-competitive inhibitors decrease the reaction rate.

    • What is the main advantage of immobilizing enzymes in alginate?

    <p>It allows the enzyme to be reused and the reaction to flow continuously.</p> Signup and view all the answers

    How does the Michaelis-Menten equation relate the velocity of an enzyme reaction (V) to the concentration of the substrate [S]?

    <p>The Michaelis-Menten equation calculates the maximum reaction velocity (Vmax) that can be achieved at a given substrate concentration.</p> Signup and view all the answers

    What is the main difference between reversible and irreversible enzyme inhibition?

    <p>Reversible inhibition stops when the inhibitor is removed, while irreversible inhibition permanently inactivates the enzyme.</p> Signup and view all the answers

    Which of the following statements about competitive inhibitors is correct?

    <p>They bind to the active site, preventing the substrate from binding.</p> Signup and view all the answers

    Which of the following factors can lead to the denaturation of an enzyme?

    <p>Increase in pH beyond the optimum range</p> Signup and view all the answers

    What is the effect of increasing the concentration of non-competitive inhibitors on the rate of an enzyme-catalyzed reaction?

    <p>The rate decreases as the shape of the enzyme is altered, but not the active site.</p> Signup and view all the answers

    What happens to the rate of an enzyme-catalyzed reaction at very high temperatures?

    <p>The rate decreases as bonds in the enzyme's tertiary structure break, changing the active site shape.</p> Signup and view all the answers

    Which of the following statements about the effect of pH on enzyme activity is correct?

    <p>Each enzyme has an optimum pH range, and the rate decreases as the pH moves away from this range.</p> Signup and view all the answers

    How do competitive inhibitors affect the rate of an enzyme-catalyzed reaction?

    <p>They decrease the rate by binding reversibly to the active site, preventing substrate binding.</p> Signup and view all the answers

    Which of the following statements about competitive inhibition is correct?

    <p>The inhibitor binds to the active site, preventing the substrate from binding.</p> Signup and view all the answers

    How can the effects of competitive inhibition be overcome?

    <p>By increasing the concentration of the substrate.</p> Signup and view all the answers

    Which of the following is a characteristic of non-competitive inhibition?

    <p>The inhibitor binds to a site other than the active site, causing a conformational change.</p> Signup and view all the answers

    If an enzyme is inhibited by both a competitive and a non-competitive inhibitor, what would be the effect on the enzyme's $V_{max}$ (maximum velocity)?

    <p>$V_{max}$ would decrease, and $K_m$ would increase.</p> Signup and view all the answers

    Which of the following statements about enzyme inhibitors is correct?

    <p>Inhibitors can be used to control the progress of a reaction.</p> Signup and view all the answers

    In a competitive inhibition scenario, what would be the effect of increasing the substrate concentration on the reaction rate?

    <p>The reaction rate would increase, and the maximum rate would remain the same.</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser