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5 May, 15:39

If you collected a piece of cell coating found directly external to a eukaryotic plasma membrane, and chemical tests showed that it was made of cellulose, you would expect to see plasmodesmata if observed with an electron microscope.

True or False?

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Answers (2)
  1. 5 May, 15:46
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    True. The cellulose must have been conveyed to the surface by the plasmodesmata through contraction and relaxation of plasmodesmata openings for movements of substances in and out of the cells.

    Explanation:

    Plasmodesmata are tiny cylindrical channels; which pass through both the secondary and primary cell walls of plant. They are lined by plasma membranes in plant cells; they are living passages. They connect the cytoplasm of adjacent cells to one another, to form a continuous network for transport of certain substances across cells; aiding effective cell communication.

    Structurally, they are produced in plant cells when fragments of the Endoplasmic Reticum of the parents cells get trapped in the cell wall meant for formation of new daughter cells during cell division.
  2. 5 May, 16:00
    0
    True

    Explanation:

    The observed cell is a plant cell because of presence of cellulose coating on cell membrane. The plasmodesmata are the a layer between cell and cell membrane of plant cells that is porous in nature and enables communication between cell and outside environment. It is obvious to find this with cellulose coating. These plasmodesmatas have same function as gap junction animal cells.
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