Chief component of thin filaments is:
Correct answer: A. Actin
- A. Actin
- B. Troponin
- C. Myosin
- D. Fibrous proteins
Explanation
The chief component of thin filaments in muscle fibers is actin. Actin molecules polymerize to form the twisted structure of thin filaments, which interact with myosin to generate muscle contractions. Troponin and myosin are also important components involved in muscle contraction, but they are not the primary constituents of the thin filaments. Fibrous proteins, on the other hand, have structural roles in various tissues but are not the chief component of thin filaments.
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About Support and Movement
Support and movement covers the axial and appendicular skeleton, bone structure, joints and the arrangement of skeletal muscles. Muscle contraction is explained through actin, myosin, sliding filaments, calcium ions and ATP, while arthritis is distinguished as a disorder of joints rather than a normal part of movement.
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