1. Osmosis and Diffusion Lab Part 2 and Cholera
Unit 4 Day 6
Osmosis and Diffusion Lab Part 2 and Cholera

2. Opener
Why is the membrane called the “fluid mosaic model”?

3. Agenda Collect Final Data Cholera Assessment Monday
Practice Test APRIL 6th!

4. I can explain how the cell membrane controls the internal environment of the cell in order to maintain dynamic homeostasis
Learning Target #1

5. Final Mass of Potato Cores
Dump liquid
Pat dry potato chunks
Reweigh
Record Mass
Add to class data table
Clean materials well!
Homework: Google Classroom Assignment Lab Analysis Part 2 due Wednesday
30 minutes

6. Cholera
How does the cholera toxin make intestinal cells unable to regulate the transport of water out of the cell? OR, why does cholera make you have uncontrollable diarrhea?
Focus on the roles of the following: adenlyate cyclase, cAMP, CFTR, Cl-, Na+, H20, gradients and osmosis.
How does the breakdown of homeostasis at the cellular level lead to a breakdown of homeostasis in the whole body? OR, why does uncontrollable diarrhea kill you?
Focus on the connection between intestinal cells, the intestine, the absorption of water, and tissues/bloodstream

7. Article 20 minutes Number the paragraphs
Read paragraphs 1-3 highlight information that connects to the reading purposes
Then add clarifying margin notes about what you highlighted
Read paragraphs 4-6 highlight information that connects to the reading purposes
Read the final paragraphs highlight information that connects to the reading purposes

8. Discuss Why cholera is so shitty!
--Five minutes at your table
--Then, as a class