Question

multiple choice question the myosin structure labeled a is a myosin tail. myosin head. cross - bridge.

Explanation:

Myosin is a motor protein in muscle contraction. The part labeled A is the myosin head which binds to actin filaments during muscle - contraction and forms cross - bridges. The myosin tail is the long, coiled - coil part, while a cross - bridge is the structure formed when the myosin head binds to actin. Here, the structure is just the myosin head before binding to actin.

Answer:

myosin head