Actin Myofilaments
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 proteins make up actin myofilaments?

  • G actin, myosin, and troponin
  • Actin, tropomyosin, and troponin
  • Actin, myosin, and troponin
  • G actin, tropomyosin, and troponin (correct)

    • What is the role of tropomyosin in a relaxed muscle?

  • It covers the active sites on G actin subunits (correct)
  • It prevents the binding of myosin myofilaments
  • It binds Ca2+
  • It anchors troponin to actin

    • How many subunits does troponin consist of?

  • Four
  • Five
  • Two
  • Three (correct)

    • What is the shape of myosin molecules in myosin myofilaments?

    <p>Elongated and shaped like golf clubs</p> Signup and view all the answers

    How many myosin molecules are there in myosin myofilaments?

    <p>About 300</p> Signup and view all the answers

    Which proteins make up myosin myofilaments?

    <p>Myosin, tropomyosin, and troponin</p> Signup and view all the answers

    What is the role of troponin in muscle contraction?

    <p>All of the above</p> Signup and view all the answers

    What is the shape of myosin molecules in myosin myofilaments?

    <p>Rod-like</p> Signup and view all the answers

    What covers the active sites on G actin subunits in a relaxed muscle?

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

    What is the function of the myosin heads in myosin myofilaments?

    <p>Binding to active sites on G actin subunits</p> Signup and view all the answers

    More Like This

    Muscle Contraction Process
    18 questions

    Muscle Contraction Process

    CoolRoseQuartz avatar
    CoolRoseQuartz
    Actin Myofilament Structure Quiz
    30 questions

    Actin Myofilament Structure Quiz

    AmbitiousLilac avatar
    AmbitiousLilac
    Myofilaments in Muscle Structure
    10 questions

    Myofilaments in Muscle Structure

    CoolElegy avatar
    CoolElegy
    Muscle Contraction and Myofilaments
    10 questions

    Muscle Contraction and Myofilaments

    KindlyAnecdote avatar
    KindlyAnecdote
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser