1 The Cell Membrane A Simulation
2 Cell membrane simulation This power point will help explain some of the features of a semi-permeable membrane. We will make a model of the cell membrane in class.
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4 Baby Food Jar
5 1. Add water This is the cytosol (solvent inside the cell)
6 The solvent inside the cell. Everything is dissolved here.
7 11. Add water 22. Add salt This represents a salty solution (your cells are hypertonic)
8 The Same Saltiness As the Ocean!!
9 You are ISOTONIC with the sea! isotonicHey Mrs. W, we are ISOTONIC!
10 11. Add water 22. Add salt 33 Add a bead This represents a gated channel
11 What’s the function of a gate?
12 11. Add water 22. Add salt 33 Add a bead 44 Add oil Oil is the main organic molecule in a semi-permeable membrane.
13 They have a fancy name: PHOSPHOLIPIDS! And a fancy shape called bipolar
14 Protein The oil represents the cell membrane, made out of phospholipids and a second molecule: (We will find out more about this later.)
15 11. Add water 22. Add salt 33 Add a bead 44 Add oil 55 Add 2 drops FC Observe what happens to the food coloring
16 11. Add water 22. Add salt 33 Add a bead 44 Add oil 55 Add 2 drops FC 66 Add some pepper Will diffusion occur?
17 11. Add water 22. Add salt 33 Add a bead 44 Add oil 55 Add 2 drops FC 66 Add some pepper 77. Add several drops of soap to the pepper
18 What’s a carrier do? A BIG carrier! A LITTLE carrier !
19 RIGHT! It carries stuff!
20 The Ultimate Carrier!