(Phospholipid Bilayer). The Cell Membrane is Semi-Permeable or Selectively Permeable. This means it only allows certain substances to enter/exit the cell.

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Presentation transcript:

(Phospholipid Bilayer)

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 Membrane 2.The Plasma Membrane 3.Selectively Permeable 4.Semi-Permeable 5.The Phospholipid Bilayer membrane.htm MANY NAME S OF THE CELL MEMBRANE

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