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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?
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
4/1 Daily Catalyst Pg. 44 Active Transport
Daily Catalyst Class Business Active transport notes Lab work time Quiz #10
4/1 Daily Catalyst Pg. 44 Active Transport
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
Key point #1: Active Transport the movement of molecules from low
to high concentration Requires ENERGY
ATP
ACTIVE TRANSPORT
Molecules are brought into the cell and the membrane pinches off, creating a vesicle.
Key Point #4: A vesicle is made of phospholipids
Vesicles
http://www.dnatube.com/video/358/Endocytosis
Video Clip
What kind of solution (hypotonic, isotonic, or hypertonic) does the cell shrink in?
Hypertonic
Tell me what you know?
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)
Lab Work Time