Which occurs FIRST as a result of ATP binding to myosin? A) cross-bridge heads are cocked into an "energized" state B) actin dissociates from from myosin C) Ca²⁺ is released from the sarcoplasmic reticulum D) actin binds to myosin E) cross-bridges rotate, sliding past the thin filament

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ATP binding to myosin causes the dissociation of actin from myosin, which is the first step in the cycle of muscle contraction.

Which Occurs FIRST as a Result of ATP Binding to Myosin