As ATP binds to the myosin head at the beginning of a muscle contraction cycle, the myosin head immediately A. detaches from actin. B. initiates binding with actin. C. tightens its bond to actin. D. swivels.

As ATP binds to the myosin head at the beginning of a muscle contraction cycle, the myosin head immediately

A. detaches from actin.

B. initiates binding with actin.

C. tightens its bond to actin.

D. swivels.

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As ATP binds to the myosin head at the beginning of a muscle contraction cycle, the myosin head immediately A. detaches from actin. B. initiates binding with actin. C. tightens …

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