Binding of myosin to actin in skeletal muscle cells does not normally take place in the absence of Ca²⁺.

Question

Quizplus · Accepted Answer

Myosin cannot bind to actin in the absence of Ca2+ and ATP, which are required for the conformational changes that cause myosin to move along the actin filament during muscle contraction. The presence of Ca2+ and ATP ensures that the myosin head is in the appropriate conformation for binding to actin.

Binding of Myosin to Actin in Skeletal Muscle Cells Does