Which is a Correct Statement

Question

Which is a correct statement?
A) A muscle fiber (cell) contains myofibrils.
B) A myofibril contains thick and thin filaments.
C) Thick and thin filaments are arranged into sarcomeres.
D) All of the choices are correct.

Accepted Answer

All of the statements are correct as they accurately describe the structure of muscle fibers and their components. Muscle fibers contain myofibrils, which in turn contain thick and thin filaments arranged into sarcomeres, the basic unit of muscle contraction.