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  1. Which of the following is the contractile protein of a muscle?
    1. Myosin
    2. Tropomyosin
    3. Actin
    4. Tubulin
Correct Option: A

Actin and tropomyosin are part of thin filaments of skeletal muscle. Tubulin is presents in microtubules. Myosin is muscle protein.



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