AMU Medical AMU Solved Paper-2004

  • question_answer
    The recent model for plasma membrane proposed by Singer and Nicolson is

    A)                  molecular - lipid model

    B)                  lamellar model

    C)                  unit membrane model

    D)                  fluid mosaic model

    Correct Answer: D

    Solution :

                     The fluid mosaic model was proposed by Singer and Nicolson (1972). According to this model, biological membrane is considered to be quasifluid structures, in which the lipid and integral proteins are arranged in a mosaic manner. The unit membrane model of biomembrane was given by Robertson. The unit membrane is considered to be trilaminar, with a bimolecular lipid layer between two protein layers.


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