5. Consists of double layered phospholipid
Allows the flexibility of the membrane without
disturbing structural integrity
Diffusion within the membrane is called
translational diffusion
6. Effect of TEMPERATURE
Role of CHOLESTEROL
At temp , cholesterol fluidity
At temp, cholesterol fluidity
7. Creates permeability barrier
Permeability depends on solubility
Lipid soluble substance can pass through
membrane
Eg: oxygen & alcohol
Water soluble substance cannot pass easily
Eg: glucose & urea
8. Membrane Proteins
o Integral
o Peripheral
Functions of proteins
1. Serves as channel proteins
2. Act as carriers , serves as pumps
3. Antigenic , serves as receptor
4. Cell adhesion molecules