1. 4/1 Daily Catalyst Pg. 44 Active Transport
1. Explain the differences between plant and animal cells and tonicity.
2. Since glucose is too big to cross the cell membrane and if water is not moving, what is another way for glucose to enter the cell?

2. 4/1 Daily Catalyst Pg. 44 Active Transport
Quiz #10 TODAY
Cell and Transport test on Wednesday
Review day on Tuesday
M.C. on cells and transport
Tutoring available
Spring Break review packet due Tuesday, April 7th

3. 4/1 Daily Catalyst Pg. 44 Active Transport
Class Business
Active transport notes
Lab work time
Quiz #10

4. Today, we will compare and contrast active and passive transport.
4/1 Objective
Today, we will compare and contrast active and passive transport.

5. Passive vs. Active Transport

6. Passive Transport Osmosis Movement of water Passive No energy
High to low
Across the membrane
Diffusion
Movement of molecules
Passive
No energy
High to low
Across the membrane
Find someone who

7. Label the following cells are isotonic, hypertonic, or hypotonic
Find someone who 1 2 3

8. Passive vs. Active Transport

9. Active Transport Key point #1: Active Transport
the movement of molecules from low to high concentration
Requires ENERGY
ATP

10. Concentration Gradient
Key Point #2:
The movement of molecules against the concentration gradient.

11. Active Transport
Example: the Sodium-Potassium pump

12. Active Transport
2 types:

13. Endocytosis Key point #3: Endocytosis: EN=IN
Molecules brought into the cells.
EN=IN

14. Vesicles
Molecules are brought into the cell and the membrane pinches off, creating a vesicle.
Key Point #4: A vesicle is made of phospholipids

15. Exocytosis
Key point #5: Exocytosis:
Molecules exit the cell
EXO=EXIT

16. Exocytosis
The vesicle fuses with the membrane and ejects the contents to the outside of the cell.

17. Exocytosis and endocytosis are examples of active transport and require ATP.

18. Video Clip

19. What type of transport?
Exocytosis

20. What type of transport?
Endocytosis

21. Tell me what you know?
What kind of solution (hypotonic, isotonic, or hypertonic) does the cell shrink in?
Hypertonic

22. What type of transport?
Active transport

23. Lab Work Time
Directions: With your lab group, complete day 3 instructions. Be sure to measure final mass, take observations, and record results. You will work on the charts on your own time.
Time: 15 minutes
Noise: 2 (with group)

24. Quiz #10
Directions: Silently and independently complete quiz #10. Turn your quiz into the basket and begin working on your spring break packet or lab report.
Time: 10 minutes
Noise: 0 (SILENT)