Q: Which of these structures has alternate dark and light bands on it?
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A
Troponin
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B
Actin
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C
Myosin
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D
Tropomyosin
C
Answer:
C
Explanation:
Myofibrils are cylindrical structures that make up the muscle fibers. They contain the contractile elements of the muscle, which are arranged in a repeating pattern of dark and light bands. These bands are called sarcomeres, and they give the myofibrils their characteristic striated appearance.
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