What provides the energy for cross-bridge cycling during muscle contraction?

Question

Quizplus · Accepted Answer

ATP provides the energy for cross-bridge cycling during muscle contraction. ATP is hydrolyzed by the myosin ATPase enzyme, which generates the energy necessary for myosin to bind to actin, move the actin filament, and generate force. Options A, B, and D all play important roles in muscle contraction but do not directly provide energy for cross-bridge cycling.

What Provides the Energy for Cross-Bridge Cycling During Muscle Contraction