Myofibrils are composed primarily of
A) actin and myosin.
B) ATP and ADP.
C) troponin and tropomyosin.
D) fascia and tendons.
E) perimysium and endomysium.

Name: Myofibrils are composed primarily of A) actin and myosin. B) ATP and ADP. C) troponin and tropomyosin. D) fascia and tendons. E) perimysium and endomysium.
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Question

Quizplus · Accepted Answer

Myofibrils are the contractile units of muscle cells and are composed primarily of the proteins actin and myosin, which interact to cause muscle contraction.

Myofibrils Are Composed Primarily of