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Honors Biology - November 9th, 2011
SWBAT: Explain how substances diffuse across the cell membrane
Warm Up:
Homework check - have your homework and calendar out
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3. Mark "A" for active, "P" for passive, and "B" for statements that apply to both types of transport.
1.) Osmosis is an example of this
2.) Moves substances from low to high
3.) Requires the use of ATP/energy
4.) Moves with the concentration gradient
5.) Creates equilibrium across the cell membrane
6.) Moves particles across the cell membrane

4. hyp tonic
hyp tonic
solutions cause cells to shrink
solutions cause cells to swell
*solution has a lower water concentration than the cell,
causing water to leave the cell until equilibrium is reached
*Solution has a higher water concentration than the cell,
causing water to rush into the cell until equilibrium is reached

5. is otonic solutions
contain equal concentrations of water
inside and outside the cell