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Notes on The Cell Membrane.

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Presentation on theme: "Notes on The Cell Membrane."— Presentation transcript:

1 Notes on The Cell Membrane

2 Purposes: Holds cell together Provides protection
Controls movement in and out of a cell Selectively permeable – some substances can pass through, others cannot Permeable to O2, H2O, CO2 Not permeable to large molecules (glucose, lipids, amino acids) and salt

3 Structure 2 layers of molecules (bilayer) Made of phospholipids
Hydrophilic heads touch water Hydrophobic tails touch each other Proteins studded throughout the bilayer Make pores to let things in and out

4 The phospholipid bilayer
Hydrophilic heads touch water Hydrophobic tails touch each other

5

6 At the bottom of your notes,
Write a 1 paragraph summary: what does the cell membrane look like?


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