1. Passive & Active Transport http://sps.k12.mo.us/chms/cmerrigan/cell %20transport.htm Animations!

2.  What does it mean to be passive?  Passive Transport – Movement across the cell membrane that does not require energy Passive Transport

3. The Cell membrane is a PHSOPHOLIPID BI-Layer What does that mean??? http://www.susanahalpine.com/anim/Life/memb.htm http://www.wisc- online.com/objects/index_tj.asp?objID=AP1101 Cell Membranes

4.  Cody’s mother decided to cook them baked beans for dinner last night. Cody decided to help himself to three serving of baked beans. As we all know “Beans beans they’re good for your heart the more you eat the more you ____”. Because of this Cody may PASS gas today in class. If he does what would happen to the people sitting around him? The next row? The back of the room? Across the room? Passive Transport

5.  Explain the concept of diffusion through the forest fires in Minnesota!  How could diffusion be applied to cell membranes?  Think about the structure of the cell membrane! Opener P___

6.  Diffusion is the random movement of a substance from an area of HIGH concentration to low concentration.  concentration = amount Diffusion

7.  Concentration Gradient – A difference in the concentration of a substance  Equilibrium – concentration (amount) is equal throughout  How do these 2 relate and explain diffusion? Diffusion explained

8. Osmosis  Osmosis is the DIFFUSION of WATER across cellular membranes  Osmosis is a special case of diffusion!

9. Hyper IsoHypo Hyper tonic – Less water in the cell then surrounding Isotonic – Equal amount of water in and out of the cell Hypo tonic – more water then surrounding

10. Observing Osmosis in Eggs  Every lab needs:

11. Left Side Page___  Create three Haikus for solutions dealing with transport.  Hyper, Hypo and Iso

12.  Draw three cells in three beakers:  The first cell is in a Hypertonic Solution  The second cell is in a Isotonic solution  The third cell is in a Hypotonic solution  Be sure to include the direction that the water moves. Opener P__

13. 1.Why are leafy green vegetables sprayed with water at the supermarket? 2.Why is salt used to preserve food? 3.Why should you not drink sea water? Diffusion Applications! It prevents them from wilting due to dehydration - OSMOSIS Salt creates a HYPERTONIC solution – This shrinks the organisms so they die There are MANY SOLUTES ( molecules ) in salt water – This creates a HYPERTONIC solution DEHYDRATING your body!

14. Elodea With Water With Salt Solution

15. Osmosis  Osmosis is the DIFFUSION of WATER across cellular membranes  Osmosis is a special case of diffusion!

16.  An ION is a CHARGED particle  IONS carry messages. They need to get into the cell to pass on the message.  There needs to be a CHANNEL for the ION to pass through Diffusion Through Ion Channels

17. Facilitated Diffusion 1 - A molecule outside the cell binds to a carrier protein on the cell membrane. 2 - The carrier protein transports the molecule across the cell membrane. 3 -The molecule is released from the carrier protein inside the cell. FACilitated Diffusion – Diffusion with HELP! The FACulty helps students

18. Passive Transport skits!  Diffusion!  You must show  High Concentration to Low concentration  Osmosis  You must show  Hyper, Hypo & Iso tonic solutions Facilitated Diffusion – You must show – How the diffusion is FACILITATED!

19. Diffusion Website  http://www.northland.cc. mn.us/biology/BIOLOGY11 11/animations/passive1.sw f http://www.northland.cc. mn.us/biology/BIOLOGY11 11/animations/passive1.sw f  Lewis Thomas Supplemental reading?

20.  COLIN ZAIO OWES US CANDY!!!!  ANY REQUEST?!?!?!?!?!?!

21. Active Transport!  What did it mean to have ACTIVE transport? What made it ACTIVE!  Must Knows for Active Transport! 1.Compare and Contrast Passive and Active Transport. – P _____ 2.Explain how a Sodium - Potassium pump works. – P_____ 3.Distinguish between endocytosis and exocytosis  P____ ENERGY!

22.  Sodium Potassium pumps ACTIVELY pump Sodium & Potassium AGAINST their concentration gradients! Sodium & Potassium Pumps

23. Four Parts to Na, K Pumps!

24. 1.Three sodium ions go into “pump” ATP binds to protein channel to “open” gate 2.The “pump” changes shape, pushing three sodium ions outside of cell

25. 3.Two Potassium ions move into pump 4.Potassium Ions are released inside of cell

26. Vesicle Movement ENDOcytosis  ENDO = in  Endocytosis is the movement of a substance INTO a cell EXOcytosis  EXO = out  Exocytosis is the movement of a substance OUT of a cell

28.  Describe Passive transport in TWO sentences!  How did we compare Passive & Active Transport? Active Transport