1.3 Membrane structure


 
Fluid Mosaic membrane model
The Fluid Mosaic membrane model (also known as the Singer-Nicolson model) is the accepted model of biological membranes.


 
Membrane components
Biological membranes are made of phospholipids, proteins and cholesterol. We now have a look at these three components.


 
Fluid Mosaic membrane model
The Fluid Mosaic membrane model (also known as the Singer-Nicolson model) is the accepted model of biological membranes.


 
Membrane models
In this video, I will compare the Unit Membrane model (Davson-Danielli model) with the Fluid Mosaic (Singer-Nicolson) model. The Davson Danielli model is considered outdated.


 
Hydrophilic and hydrophobic parts
Channel proteins allow hydrophilic substances to pass thorugh the lipid bilayer of a membrane. The inside of a channel protein is hydrophilic and therefore allows substances to pass through.


 
Membrane protein functions
Membrane proteins can have a wide range of different functions. While membrane proteins can be important for transporting substances accross the membrane, they can also have a wide range of other functions.