1. Daily Warm-up Wednesday, October 1st
-What did the chloroplast do for you in CellCraft?
HW:
-Read 7.3

2. Cell Membrane Control what goes in and out Semi-permeable.
Structure of membrane- This model is called the fluid mosaic model
Stop

3. Cell Transport
Passive
Active

4. Passive Transport
Movement of materials across membrane without energy

5. 1. Diffusion
Movement of any particle from an area of high to low concentration.

6. What affects the rate of diffusion?
Permeability of membrane (size of holes in membrane)
Concentration gradient
Size of Particle

7. 2. Facilitated Diffusion
Usage of protein channels to cross the membrane
Does not require energy
Ex. Osmosis

8. Osmosis
Movement of water from a high concentration to a low concentration across a membrane by aquaporins

9. Effects of Osmosis
Isotonic
Hypertonic
Hypotonic

10. Isotonic
Equal concentration of solutes on both sides of a membrane.

11. Hypotonic Smaller concentration of solutes
Can apply to cell or solution

12. Hypertonic Contains a greater concentration of solutes
Can apply to cell or solution

13. Stop

14. Today’s Activity Modeling scenarios with play-doh
Please write and draw answers on separate sheet of paper
Work with table partners, but each person needs to answer questions and do drawings.

15. Daily Warm-up Wednesday, October 7th
A cell with 1% solute concentration is placed in a solution with 10% solute concentration. What will happen to the cell? Why? HW: -Finish osmosis questions -Study for quiz ( ) Turn in: -Cell Craft worksheet (last chance)

17. Active Transport Requires energy Low to high Usually done by
carrier proteins
Against the gradient

18. Bulk Transport Endocytosis- movement of materials into the cell
Exocytosis- moving large items out of the cell
Why are endocytosis and exocytosis considered to be active transport?