Myofibrils?

Question

A) include contractile proteins which stabilize the structure of the sarcomere.

B)include the contractile proteins actin and myosin

C)include regulatory proteins that keep thick and thin filaments in proper alignment

D)include structural proteins that decrease the extensibility and elasticity of the myofiber

E) include structural proteins that turn the contraction process off or on.

Answer 1

B