Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2008

  • question_answer
    Spindle fibre is made up of

    A)  tubulin                                

    B)  humulin

    C)  intermediate filament

    D)  Hagellin

    Correct Answer: A

    Solution :

    Tubulin' is a cytoskeletal globular protein that    polymerizes to form microtubules. It plays a       motile and contractile role in cell structure and               cell division. During cell division, the microtubules            radiate from each end of the cell form a basket            like arrangement (the spindle) which helps in the             movement of chromosomes to poles.             The principal protein of cilia and flagella is also        tubulin. Microtubules play a key role in the         movement of cilia and flagella.             Intermediate filaments are tough rope-like            bundles   or  protein   (keratin,   desmin,                peripherin,  vimentin  etc).  Intermediate      filaments provide mechanical stability to cells.    They interact with microfilaments (made of             protein, actin) and microtubules to form               cytoskeleton.


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