Which term refers to a specialized organelle within a muscle fiber?
A)actin
B)myofibril
C)myosin
D)troponin
E)tropomyosin

Question

Quizplus · Accepted Answer

A myofibril is a specialized organelle within a muscle fiber that contains the proteins actin and myosin, which are responsible for muscle contraction. Troponin and tropomyosin are proteins that regulate muscle contraction by controlling the interaction between actin and myosin.

Which Term Refers to a Specialized Organelle Within a Muscle