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Q.
Microtubule is involved in the
Punjab PMETPunjab PMET 2010
Solution:
Microtubules are one of the essential protein filaments of the cytoskeletons of probably all eukaryotic cells and of their cilia, flagella, basal bodies, centrioles and mitotic and meiosis spindles. Each microtubule is made up of hollow cylinder of $13 $ proto fi laments of a tubulin protein. The diameter of each microfibril is $25 \,nm$. The function of microtubule is to guide organelle and chromosome movement in the cell, cause cell elongation and help in movement of cilia/flagella.