1. Cell Transport

2. Three Main parts to an Animal Cell
Cell (plasma) Membrane
Cytoplasm
Nucleus

3. Organelle Review

4. Organelle Websites http://interactivesites.weebly.com/cells.html

5. The Nucleus Function: Controls cell activity
Contains the cells genetic information
Are NOT found in all types of cells yet some cells have several
Why?
Controls cell activity contains the cells genetic info (chromosomes)

6. The Mitochondria Function: ATP production
Cristae allow for ATP production
Number of mitochondria will vary between cells, it depends on the type of the cell
Cristae allow for several chemical reactions that allow for ATP production

7. Lysosome Contains digestive enzymes Function:
Destroys unneeded cellular material

8. Permeability of Cells Lab
Which cell structure did the sandwich bag represent?
What happened to the starch inside the sandwich bag after it had been soaked for 20 minutes? What about after soaking for twenty four hours?
What happened to the water in the container after the bag of starch had been soaking for 20 minutes? What about soaking for twenty four hours?
Iodine turns purple-black in the presence of starch. What process (osmosis or diffusion) do you think occurred that caused the results you observed? How do you know this?
Was there a net movement of molecules? If so, which direction did the molecules move? How do you know this?

9. Membrane Structure and Function POGIL Review
What is the function of cell membrane? Which type(s) of molecules are allowed to cross the cell membrane? What is the cell membrane made up of?
Allows certain molecules to enter and leave the cell. Small non-polar molecules are able to cross the membrane. The cell membrane is made up of phospholipids, carbohydrates and proteins.

10. Membrane Structure and Function POGIL Review
Diffusion
Does this require energy? Why or why not?
Which molecules are able to cross the membrane?
No, because the molecules are moving along the concentration gradient. Lipid soluble substances are able to cross the membrane. Lipid soluble molecules include: oxygen, carbon dioxide, fatty acids, nitrogen gases and fat soluble vitamins (A, D,E and K)
Diffusion

11. Always Remember “Molecules go with the flow from high to low”
During diffusion
“Molecules go with the flow from high to low”

12. Membrane Structure and Function (POGIL Review)
Facilitated Diffusion
Which molecules pass through the channel?
What enables them to cross?
Facilitated Diffusion: Membrane proteins assist molecules across via channels or carriers.

13. Active Transport Define active transport Is energy needed? Why?
What type of molecules are transported?

14. The Na+K+ Pump Protein that brings in K+ ions and kicks out Na+ ions
Protein that brings in K+ ions and kicks out Na+ ions
Why is the pump constantly working?
Is this an example of active transport or passive transport?
Ideally the cell wants a low conc of Na in the cell and a high conc of K, Ions slowly leak back and the pump must continually maintain the balance

15. Endy, exo and phago

16. Osmosis Define osmosis Is this passive or active transport? Why?
The diffusion of water across a membrane

17. Osmotic Movement Lab Things you should know:
Your hypothesis should include both the independent and dependent variable and should center around how you know molecules are moving and which direction they are moving in
You should read your background to create your hypothesis, maybe this will help you

18. Osmotic Movement Review
Osmotic Condition
Direction of water movement
Effect on the cell
Picture
Isotonic
Hypotonic
Hypertonic

19. Cell Transport Analysis
Based on what you learned in class today, was this an example of diffusion, osmosis, endocytosis, exocytosis or phagocytosis? Explain your answer.
Describe how white blood cells attack germs in the body. Which type of cell transport is this an example of?
Why do cells need to use active transport?

20. Facilitated Diffusion
Molecular Movement
Active Transport
Passive Transport
Diffusion
Facilitated Diffusion
Requires energy input
by the cell
Molecules move along (down)
a concentration gradient
Moves molecules against (up)
Always involves channel
(membrane-spanning)proteins
Molecules pass between
the phospholipids
Moves ions like Na+ and K+
Moves large molecules
Moves small nonpolar and
polar molecules