Cell Membrane is membrane that separates the interior cells from the outside enviorment. The cell membrane is a selectively permeable to ion and control the movement of substances in and out of the cell. Cell membrane protect the cell from the surrounding. Cell membrane has a lipid layer. Lipid layer is thin membrane made into 2 layers. Lipid layer is flat that form a barrier around the cell. The cell membrane surrounds the cytoplasm of living cells.
Cell membrane is related to biology. Cell Membrane is a cell. Cell membrane has a lots of parts/ functions.
Why do we have lot of functions? Why lipid layer is thin? Why does the cell membrane separate other functions?
etap.org/demo/biology1/instruction1tutor.html, en.wikipedia.org/wiki/Cell_membrane
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