Which of the following describes the role of myosin in muscle contraction?

Question

Quizplus · Accepted Answer

Myosin is a motor protein that binds to actin filaments and moves them along, causing muscle contraction. When calcium ions are released into the muscle cell, they bind to the regulatory protein troponin, which causes a conformational change in the protein complex. This exposes the binding sites on the actin filaments, allowing myosin heads to attach. ATP provides the energy needed for myosin heads to move along the actin filaments, causing them to slide past each other, resulting in muscle contraction. When myosin heads are attached to actin filaments, they undergo a conformational change, causing them to bend and pull the actin towards the center of the sarcomere.

Which of the Following Describes the Role of Myosin in Muscle