Skeletal muscle fibers contain striations. what is the best description of a striation?

Answer: alternating dark and light bandsof protein filaments

Skeletal muscle fibers contain striations that can be described as alternating dark and light bands of protein filaments. Actin, tropomyosin, and troponin are among the protein filaments. The dark bands are the so-called A bands. Alternating light bands are referred to as I bands.