During a Cross-Bridge Cycle in Skeletal Muscle, the

question 60

Multiple Choice

During a cross-bridge cycle in skeletal muscle, the

• A) Cross bridge is energized when it hydrolyzes ATP.
• B) Myosin cross bridge must bind with an ATPase before the cross bridge will experience a power stroke.
• C) Ca²⁺ causes the troponin-tropomyosin complex to move off the actin-binding sites on myosin.
• D) ADP binds to the cross bridge at the end of the power stroke.
• E) Cross bridge is energized when it hydrolyzes ATP, and myosin cross bridge must bind with an ATPase before the cross bridge will experience a power stroke.