During a Cross-Bridge Cycle in Skeletal Muscle

Multiple Choice

During a cross-bridge cycle in skeletal muscle,

A) the cross bridge is energized when it splits ATP into ADP and P
B) the cross bridge must bind with ATPase before a power stroke will occur
C) Ca₂₊ causes tropomyosin to move off of the myosin's actin-binding sites
D) ADP binds to the cross bridge at the end of the power stroke
E) both a and b occur