webMolecMoveacrossmemb15.notebook
November 14, 2016
Do Now: 11/10/16
Find these questions in your Lab notebook
Having trouble? go to the Need to Know Box on p. 156
3. If you go for a swim in the ocean, is the ocean a hypertonic, hypotonic, or isotonic solution compared to your internal environment?
4. Predict what might happen to your cells if you stayed in the water for hours.
Revise your responses based on what you know NOW
Also check out the eggs (broken)­ what moelcules seemed to have passed through into the internal environment?
Think­Pair­Share w/table partner­
person on LEFT goes first
Jan 5­8:33 PM
Title: Put in TOC
Active Art: Active vs. Passive Transport
Activity Q: What is the difference between active and passive transport?
Dec 9­3:39 PM
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webMolecMoveacrossmemb15.notebook
November 14, 2016
Do Now: 11/14/16
True/False:
1. Passive transport sometimes requires energy
2. Diffusion is a type of passive transport
3. Diffusion is the movement of molecules from low to high concentration
4. Osmosis is the diffusion of water through a semi‐permeable membrane
5. When cells are placed in a hypertonic environment, they get larger
Nov 14­8:11 AM
Do Now: 11/14/16
True/False:
1. Passive transport sometimes requires energy False‐ no energy used
2. Diffusion is a type of passive transport True
3. Diffusion is the movement of molecules from low to high concentration False‐ movement from high to low
4. Osmosis is the diffusion of water through a semi‐permeable membrane True
5. When cells are placed in a hypertonic environment, they get larger
False‐ this would be true in a hypotonic environment. In hypertonic, they would shrink
Nov 14­8:11 AM
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webMolecMoveacrossmemb15.notebook
November 14, 2016
Evidence Collection: Get laptop­ work with partner
Use Internet Explorer for best results
Follow the instructions on the lab sheet and work through the tutorials.
Record responses in enough detail that you can use this as a study resource.
You will have about 25 min.
If you were absent Thursday, please work
with someone else who was absent or work individually.
Dec 9­3:44 PM
Go to lab notebook, reading notes: red‐pen revision
Why is active transport considered "active?"
ACTIVE TRANSPORT: Requires energy (ATP)
­moves against conc. gradient low high
Protein Pumps: I , Cl , Fe , Ca , Mg , but most common is:
Sodium/potassium exchange pump
Sep 26­5:02 PM
3
webMolecMoveacrossmemb15.notebook
November 14, 2016
SodiumPotassiumPumpQuiz
K+ diffusing out through leak channels
Energy
Na+ diffusing in
Oct 16­12:13 PM
White blood cell chasing bacteria
VESICULAR TRANSPORT­ is it active?
Any movement of the cell membrane itself, will require energy = PhagocytosisReview/Quiz
active process
Endocytosis: packaging of extracellular material to import into the cell
Exocytosis: the fusing of a vessicle/
vacuole with the cell membrane to expel wastes, or secreted products on cell surface
What might be a reason a cell would use the process of exocytosis?
Sep 26­5:03 PM
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webMolecMoveacrossmemb15.notebook
November 14, 2016
Review Venn Diagram
Active transport
Passive transport
Turn in assignment to bin
Nov 9­7:33 AM
Nov 9­7:56 AM
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