In a muscle fiber, myosin and actin are the:
A)contracting proteins
B)inhibiting proteins
C)energy proteins
D)impulse proteins

Question

Quizplus · Accepted Answer

Myosin and actin are both proteins that play crucial roles in muscle contraction. Myosin generates the force for muscle contraction by binding to actin filaments and pulling them closer together. Actin creates the thin filaments that, along with thick filaments made of myosin, slide past each other during muscle contraction. Therefore, A (contracting proteins) is the best choice.

In a Muscle Fiber, Myosin and Actin Are The