Tuesday 5 June 2012

Structure of Plasma Membrane




Phospholipids Bilayer



The picture above show a structure of phospholipids bilayer. This structure can be found on the plasma membrane. The components of this structures are:
1. Phospholipids
2. Protein
3. Chloesterol

Phospholipids
The structure of phospholipids consists of :
1. Hydrophilic Head - love water molecule
2. Hydrophobic Tail - hate water molecule 


Stucture of Phospholipids



Protein
There are two proteins:
1. Carrier protein
2. Pore protein

Example of substances that can pass through into :
1. Carries protein - Large water molecule [ Glucose and Amino Acids]
2. Pore protein - Small water molecule [ Ions]


Cholesterol
Makes the bilayer stronger, more flexible and less permeable to water-soluble substances such as ions

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