(phospholipid bilayer). the cell membrane is semi-permeable or selectively permeable. this means it...
TRANSCRIPT
The Cell Membrane is Semi-Permeable or Selectively Permeable.
This means it only allows certain substances to enter/exit the cell.
It is also called the “Phospholipid Bilayer”
SEMI-PERMEABLE
Phospho= Phosphate
Lipid= Fat
The cell membrane is made of phosphate and fats.
Bilayer = two layers.
So, two layers of phosphate and fat
WHAT “PHOSPHOLIPID” MEANS
The Cell (Plasma) Membrane is made of many phospholipids joined in a chain.
A single phospholipid looks a sperm with two heads.
The phosphate head attracts water
The fatty (lipid) tail repels water
MANY PHOSPHOLIPIDS
The water-loving head is HydroPHILIC
“PHILOS” is Latin for Love
The Fatty Acid tail is HydroPHOBIC
It’s afraid of water
1. The Cell Membrane2. The Plasma Membrane3. Selectively Permeable
4. Semi-Permeable5. The Phospholipid Bilayer
http://biology.about.com/od/cellanatomy/ss/cell-membrane.htm
MANY NAME S OF THE CELL MEMBRANE