What Action Causes the Shape Change in the Myosin Crossbridge

question 71

Multiple Choice

What action causes the shape change in the myosin crossbridge that directly triggers the power stroke in skeletal muscle contraction?

• A) binding of tropomyosin to myosin
• B) binding of troponin to tropomyosin
• C) binding of tropomyosin to actin
• D) binding of myosin to actin

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