The change in the appearance off the cell resulted from more… 1. water flowing into the cell than flowing out of the cell 2. water flowing out of the cell than flowing into the cell 3. salt flowing into the cell than flowing out of the cell 4. salt flowing out of the cell than flowing into the cell

How would several of these phospholipids arrange themselves if placed in water? A Phospholipid

Now What?

The Cell Membrane http://www.youtube.com/watch?v=Qqsf_UJcfBc Fluid mosaic 1:26

The Cell Membrane Glycoprotein Glycolipids Phospholipid bilayer Fatty acid tails Cholesterol Integral protein or transmembrane protein Peripheral protein Phosphate heads

Can you explain this? 5% Starch Solution 25% Starch Solution (the purple represents starch)

Hypertonic solution

Hypotonic solution

Isotonic- THE CONCENTRATION OF DISSOLVED PARTICLES IS THE SAME INSIDE AND OUTSIDE THE CELL Hypertonic THE CONCENTRATION OF DISSOLVED PARTICLES IS HIGHER OUTSIDE THE CELL THAN INSIDE THE CELL Hypotonic THE CONCENTRATION OF DISSOLVED PARTICLES IS LOWER OUTSIDE THE CELL THAN INSIDE THE CELL

Is the solution outside the cell isotonic, hypotonic, or hypertonic?

Is the solution outside the cell isotonic, hypotonic, or hypertonic?

Is the solution outside the cell isotonic, hypotonic, or hypertonic?

Is the solution outside the cell isotonic, hypotonic, or hypertonic?

Facilitated Diffusion

Facilitated Diffusion High concentration of molecules Low concentration of molecules

The Sodium-Potassium Pump

The Sodium-Potassium Pump

http://telstar.ote.cmu.edu/biology/MembranePage/index2.html Scroll to bottom (fluid mosaic) http://www.youtube.com/watch?v=Qqsf_UJcfBc Fluid mosaic 1:26 http://www.youtube.com/watch?v=svAAiKsJa-Y Good review of membrane 5:59

(neither passive or active transport) cyclosis The circulation of cytoplasm within certain cells and one-celled organisms. (neither passive or active transport)