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membrane proteins
types
Question | Answer |
---|---|
Integral | extend into or through the bilayer and are firmly embedded in it |
Peripheral proteins | associate more loosely with polar heads or with integral proteins on inner or outer surface of bilayer |
glycoproteins | part carb, part protein |
glycocalyx | gycoproteins and glycolipids |
ion channel(intregral) | fluid-filled tunnels |
transporters(integral) | physically carry molecules across bilayer for glucose |
receptors | ablity to communicate with specific molecules and alter cell and function |
ligand | molecule |
enzymes(integral) | catalysts |
linkers(integral) | bind cells together-involved with shape change and cell molecule-help with cell stability |
gradient | difference in something between two areas |
concentration | the amt of substance in an area |
concentration gradient | difference in solute concentration between two area |
movement of molecule from [High] to [low] | solute moves down the concentration gradient |
molecule from[low] to [high] | mean the concentration gradient moves up the concentration gradient |
electrical gradient | unequal ion charged distribution--difference in electrical charge between two areas |
electrochemical gradient | ion or molecule influenced by both [ ] amd electrical gradient |