1. Facilitated Diffusion Left Page 23 One Pager
Happy Tuesday Bio-ninjas!
Please READ ALL sections below!
Journals:
Table of Contents:
Right Page 24
Facilitated Diffusion
Left Page 23
One Pager
Set up page 24 for Cornell Notes with Title and EQ
EQ: How is facilitated diffusion different or the same as osmosis or regular diffusion?
Due today:
Homework: Worksheet(s)
Annotated notes: Diffusion/Osmosis
One Day Late: (70)
Nothing…
Two days Late: (50)
Annotated Notes (Organelles)
Colored Pro/Eu Cell Diagrams
Cell City Analogy Worksheet
Three Days Late: (0)
Annotated Cornell Notes (Eukayotes)
Note Cards-word/definition/picture and color for words we’ve covered so far.
Prokaryotic vs Eukaryotic Y-Chart
Creative thinking exercise
HAVE LATE WORK/EXTRA CREDIT OUT READY TO BE CHECKED!

2. How do molecules move across the cell membrane?
JOURNALS:
Table of Contents:
Right Page 23
Egg Lab
Left Page 22
Osmosis Homework 2
Set up page 23 Egg lab
EQ: How do molecules move across a membrane?
Egg Lab
Essential Question:
Question Column
Egg in Vinegar
Egg in Syrup
Egg in Water
L1 –
L2 –
L3 –
Prediction:
Hypothesis:
Observation:
Diagram:
Summary -
How do molecules move across the cell membrane?

3. Discuss with your partner:
What is happening in the picture?
You must use the words: Lipid Bilayer, Concentration, High, Low, Diffusion/Osmosis, Particles/Water, Equilibrium .

4. Homework check!

5. Standard B4.B: investigate and explain cellular processes, including homeostasis, energy conversions, transport of molecules, and synthesis of new molecules.

6. Concentration Gradient

7. The lipid bilayer allows most small molecules to diffuse in and out but not large or charged molecules.

8. So, if the cell needs these larger or charged molecules to function, how are they able to get through the membrane?

9. The Cell Membrane: It’s not just Lipids, Ya’ll
The Cell Membrane: It’s not just Lipids, Ya’ll. It surrounds the entire cell and also contains special protein and carbohydrate compounds.

10. The Cell Membrane: Proteins perform some very special functions for the cell.

11. Proteins form special pathways or channels for larger particles

12. Facilitate: to make easier or to assist
Diffuse: when molecules move from high to low concentration or with the concentration gradient
High
Low

13. Facilitated Diffusion: molecules diffuse across a membrane with the help of transport proteins.

14. Facilitated Diffusion

15. Diffusion and Facilitated Diffusion both go with the concentration gradient. (high to low)

16. Moving WITH the concentration gradient (high to low) requires no energy.
*Diffusion, Osmosis and Facilitated Diffusion “Go with the flow”

17. However...sometimes molecules need to move AGAINST the concentration gradient (Low to High)

18. Moving from Low to High concentration DOES require energy…
*Going against the flow

19. Active Transport:. Larger molecules move through a protein channel
Active Transport: *Larger molecules move through a protein channel *Low to higher concentration
*Requires energy.

20. ATP: Adenosine Triphosphate Molecule that provides energy for Active Transport

21. Endocytosis is the process of taking large amounts of material into the cell by means of enfoldings of the cell membrane.

22. Exocytosis forces contents out of a cell when a vacuole fuses with the cell membrane.

23. Answer the following questions:
What is happening to the Hydrogen in the picture?
What process is happening in the top part of the picture? How do you know?
What process is happening in the bottom part of the picture? How do you know?

24. Set up foldable Homework: One Pager (left side)
Compare/Contrast Diffusion, Osmosis, and Facilitated Diffusion.
Must include at least five different colors
At least one picture for each process.