RAJASTHAN PMT Rajasthan - PMT Solved Paper-2007

  • question_answer
    Mitotic spindle is mainly composed of which proteins?

    A)  Actin                    

    B)         Myosin

    C)  Actomyosin     

    D)         Myoglobin

    Correct Answer: A

    Solution :

    Spindles formed during mitosis and meiosis are nothing, but micro-tubule complex, Micro-tubules are made up of small units of tubulin which has an amino acid composition similar to actin. Myosin: A protein that makes up the thick myofilaments in muscle fibre. Actomyosin: Complex formed when the pure proteins actin and myocin are mixed. Myoglobin: Conjugated protein of vertebrates striated and cardiac muscle fibres.


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