1. (Phospholipid Bilayer)

2. 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

3. 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

4. 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

5. 1.The Cell Membrane 2.The Plasma Membrane 3.Selectively Permeable 4.Semi-Permeable 5.The Phospholipid Bilayer http://biology.about.com/od/cellanatomy/ss/cell- membrane.htm MANY NAME S OF THE CELL MEMBRANE

6. CHOOSE ONE PICTURE TO DRAW

7. CHOOSE ONE OF THE PICTURES TO DRAW