What is plasma membrane?
Many biochemical
reactions take place in a cell.The cells require
many substances to carry out these biochemical reaction.'Waste
products that are formed during biochemical reactions within the cells must be eliminated because they are poisonous.
The
structure of the plasma membrane
The
plasma membrane has 3 components
1. Double
layer of phospholipids molecules.
2. Pore
3. Carrier
Proteins
.The phospholipids bilayer, proteins and
other parts are not
rigid or static, but
form a dynamic and flexible structure.
•The protein molecules float about in the
phospholipid bilayer to form a mosaic pattern that is always changing like
fluid.
•Singer and Nicolson call it ‘fluid-mosaic
model’
Movement across plasma membrane
Many biochemical reactions take place in a cell.The cells require many substances to carry out these biochemical reaction.'Waste products that are formed during biochemical reactions within the cells must be eliminated because they are poisonous.
The
plasma membrane has 3 components
1. Double
layer of phospholipids molecules.
2. Pore
3. Carrier
Proteins
.The phospholipids bilayer, proteins and
other parts are not
rigid or static, but
form a dynamic and flexible structure.
•The protein molecules float about in the
phospholipid bilayer to form a mosaic pattern that is always changing like
fluid.
•Singer and Nicolson call it ‘fluid-mosaic
model’
Movement across plasma membrane
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