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... an electron microscope is necessary PLAN 1) Introduction - Cell membranes and the misconception. The complexity. 2) How the structure of the membrane was thought of to be as before and after. 3) How the membrane is examined. How the cell membrane is formed and its importance and functions. 4) How substances and water pass in and out of cell membranes. 5) Environmental variables affecting how the membrane works. 6) Organelles having suitable membranes. 7) Conclusion - How important the membrane is to the whole cell and even the smallest parts of it inside. Cell membranes were thought, in the beginning, to be just simple structures made of fat; therefore people just thought they looked like one continuous line. Later on proteins were found along with the lipid. Their true function and arrangement was not yet known. Today with improved technology and theories, the cell membrane is looked upon as a complex and extremely important cell ultra structure ...