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Questions and Answers
How many polypeptide chains compose myosin?
How many polypeptide chains compose myosin?
- 8
- 6 (correct)
- 4
- 10
What is the molecular weight of myosin?
What is the molecular weight of myosin?
- 360,000
- 480,000 (correct)
- 420,000
- 240,000
Where are the ATPase sites located in the myosin molecule?
Where are the ATPase sites located in the myosin molecule?
- In the globular heads
- In the arm
- Both in the tail
- One head contains the sites of ATP hydrolysis (correct)
Which type of myosin is present in skeletal muscle?
Which type of myosin is present in skeletal muscle?
What is the molecular weight of actin?
What is the molecular weight of actin?
What is the diameter of the I (Isotropic to light) band?
What is the diameter of the I (Isotropic to light) band?
How is actin arranged structurally?
How is actin arranged structurally?
What protein is responsible for inhibiting the binding of actin and myosin?
What protein is responsible for inhibiting the binding of actin and myosin?
What is the role of titin in the muscle structure?
What is the role of titin in the muscle structure?
What is the central H-zone characterized by?
What is the central H-zone characterized by?
What causes longitudinal striations in the muscle fiber?
What causes longitudinal striations in the muscle fiber?
Which protein connects the actin filaments to the Z lines?
Which protein connects the actin filaments to the Z lines?
What is the function of dystrophin-glycoprotein complex?
What is the function of dystrophin-glycoprotein complex?
What protein binds tropomyosin?
What protein binds tropomyosin?
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