AIIMS AIIMS Solved Paper-2011

  • question_answer
    Which of the following ions are necessary for assembly of microtubules?

    A)  \[N{{a}^{+}}\] and \[{{K}^{+}}\]

    B)  \[C{{a}^{2+}}\]  and \[C{{l}^{-}}\]

    C)  \[C{{a}^{+}}\] and \[M{{g}^{2+}}\]         

    D)         \[N{{a}^{+}}\] and \[C{{a}^{+}}\]

    Correct Answer: C

    Solution :

    Richard Weisenberg (1972) reported the tubulin polymerization by addition of  \[M{{g}^{2+}}\]and \[C{{a}^{+}}\]. Microtubules could be disassembled and reassembled over and over by changing on concentration and lowering and raising the temperature.


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