9. Muscle Tissue
Steps of Muscle Contraction
Problem 10.9a
Textbook Question
Textbook QuestionWhich of the following statements accurately describes the role of ATP in a muscle contraction?
a. ATP is directly responsible for the power stroke.
b. ATP moves troponin and tropomyosin away from actin.
c. ATP breaks the actin/myosin attachment and 'cocks' the myosin head.
d. ATP causes the myofilaments to shorten.
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