A myoblast contain(s)__________,but a myofibril does not.
A) actin
B) many nuclei
C) myosin
D) many sarcomeres

Question

Quizplus · Accepted Answer

A myoblast is an immature muscle cell that has not yet fused to form a mature muscle fiber. It contains many nuclei, which will eventually become distributed throughout the mature fiber. In contrast, a myofibril is a structure found within a mature muscle fiber that contains repeating units called sarcomeres, which are composed of actin and myosin filaments but do not have nuclei.

A Myoblast Contain(s)__________,but a Myofibril Does Not