Which of the following statements about skeletal muscle fibers is true?
A)Each muscle fiber is composed of multinucleated cells.
B)Each muscle fiber is composed of globular proteins.
C)Each muscle fiber contains one sarcomere.
D)Each muscle fiber contains actin and myosin.

Question

Quizplus · Accepted Answer

Each muscle fiber contains the contractile proteins actin and myosin, which are organized into repeating units called sarcomeres. The other options are incorrect - muscle fibers are multinucleated (A), not composed of globular proteins (B), and contain multiple sarcomeres (C).

Which of the Following Statements About Skeletal Muscle Fibers Is