NEET Biology NEET PYQ-Cell Cycle And Cell Division

  • question_answer
    Mitotic spindle is mainly composed of which proteins? [AIPMT 2002]

    A) Actin

    B) Myosin

    C) Actomyosin

    D) Myoglobin

    Correct Answer: A

    Solution :

    [A] 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 vertebrate's striated and cardiac muscle fibres.


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