The Fluid Mosaic Model
- Created by: stateofbecca9
- Created on: 11-09-14 16:44
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- The Fluid Mosaic Model
- a phospholipid bilayer
- phosphates
- proteins
- fluid because the membrane moves in a wave like pattern
- but also because each molecule is also moving
- IMAGINE: someone throws tennis, football and plastic golf balls into a swimming pool. Each ball will be A) bobbing up and down and B) moving gently through the water!
- but also because each molecule is also moving
- mosaic because it is made up of many parts or "molecules"
- a phospholipid bilayer
- Phospholipid Bilayer
- head= hydrophillic
- tail= hydrophobic
- hydrophillic heads attracted to fluid
- Proteins
- intrinsic proteins
- span the whole bilayer
- some are CHANNEL proteins which let bigger molecules into the cell
- extrinsic proteins
- on one side of the bilayer
- glycoproteins
- sugar chain attached to a protein on the surface of the membrane
- involved in cell recognition
- useful in defence responces
- glycolipids
- a carbohydrate chain connects to one of the proteins on the surface.
- this chain is used for cell recognition, typically with blood antigens, detecting a blood group.
- a carbohydrate chain connects to one of the proteins on the surface.
- cholesterol
- creates stability in membrane
- lipid like substance called a STEROID
- TOO LITTLE= membrane moves too much, wouldn't stay together
- TOO MUCH= substances would not be let into the cell
- intrinsic proteins
- head= hydrophillic
- polar/ has a charge
- non polar/has no charge
- Untitled
- forms another layer due to second fluid
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