10 Questions
Which proteins make up actin myofilaments?
G actin, tropomyosin, and troponin
What is the role of tropomyosin in a relaxed muscle?
It covers the active sites on G actin subunits
How many subunits does troponin consist of?
Three
What is the shape of myosin molecules in myosin myofilaments?
Elongated and shaped like golf clubs
How many myosin molecules are there in myosin myofilaments?
About 300
Which proteins make up myosin myofilaments?
Myosin, tropomyosin, and troponin
What is the role of troponin in muscle contraction?
All of the above
What is the shape of myosin molecules in myosin myofilaments?
Rod-like
What covers the active sites on G actin subunits in a relaxed muscle?
Tropomyosin
What is the function of the myosin heads in myosin myofilaments?
Binding to active sites on G actin subunits
Test your knowledge of actin myofilaments and their composition with this quiz. Learn about the role of globular actin, tropomyosin, and troponin in muscle contraction. Explore how these proteins interact and regulate the binding of myosin myofilaments.
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