<prompt> Each myosin molecule of sarcomere is composed ofTwo monomersFour monomersSix monomersEight monomers  <response>: Sarcomeres are the fundamental contractile unit of skeletal muscle and are characterized by their highly ordered appearance under a polarizing light microscope.Thick filaments in the A band are composed primarily of the protein myosin. Each myosin molecule is composed of six monomers: two protein strands intewined in a helical arrangement termed heavy chains and four smaller, globular proteins termed myosin light chains.Thin filaments are composed of three primary proteins: actin, tropomyosin, and troponin. 