Understanding How the Cell Operates (organelles). Cell membrane. Key molecules Phospholipid bilayer Transport proteins Carbohydrates Cholesterol. Cell Membrane Animation. The membrane. Why is it Fluid? Why is it Mosaic? . Key Function of the Membrane. Helps to maintain homeostasis :
Cell Membrane Animation
Concentration Gradient (is a membrane required? )
The movement of water from an area of high concentration (of water) to low concentration (of water).
Look carefully at what is happening which direction hasthe water moved after osmosis has occurred?
Hypertonic Isotonic Hypotonic
Each protein is specific for one type of ion
in the cytosol
or the environment