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The cell membrane is a fluid, flexible barrier that controls what goes in and out of the cell. It is not solid but is made up largely of many small molecules called phospholipids [FOSS-foe-lip-ids] that work together to create the membrane.
The cell membrane is a fluid, flexible barrier that controls what goes in and out of the cell. It is not solid but is made up largely of many small molecules called phospholipids [FOSS-foe-lip-ids] that work together to create the membrane.
Since the inside of the cell AND the outside of the cell contains water, the phospholipids create a bilayer with the water-loving heads on the outside near the water/cytoplasm and the water-fearing tails safely inside.
The phospholipid bilayer also contains proteins that help to stabilize the membrane and provides passage for larger molecules into and out of the cell.
The phospholipid bilayer also contains proteins that help to stabilize the membrane and provides passage for larger molecules into and out of the cell.
Transport through the membrane
Transport through the membrane
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