cell surface membrane
- Created by: Sophie Gibbons
- Created on: 06-01-13 15:18
View mindmap
- Cell-surface membrane
- Fluid-mosaic model.
- Fluid - phospholipids can move relative to one another so it is contantly moving.
- Mosaic - proteins embedded in the bilayer vary in size, shape and pattern.
- Phosoholipids
- Form a bilayer
- One layer has its heads interacting the water outside the cell while the other deals with the water inside the cell.
- Alloe lipid soluble material to entre and leave.
- Prevent water soluble material entering and leaving the cell.
- Make the membrane flexible.
- Proteins
- Intrinsic
- Completely span the bilayer
- Act as carriers for water soluble material
- Extrinsic
- Occur on the surface or partially embedded in the bilayer
- Give mechanical support
- Act as receptors
- Intrinsic
- Fluid-mosaic model.
- One layer has its heads interacting the water outside the cell while the other deals with the water inside the cell.
Comments
No comments have yet been made