1. Catalyst #4: December 8th, 2014
You received a slip at the door. On your Catalyst paper, identify each of the three solutions on the slip. (Hint: Look at the solute concentration outside of the cell. Ask yourself: Is that number higher or lower than inside of the cell?)

2. Agenda Catalyst (7 minutes) Tracking (8 minutes)
Osmosis “Eggsperiment” Part 2: 10 minutes
Osmosis Partner Relay: Remainder
Homework:
Osmosis quiz tomorrow
Begin studying for Semester 1 exam

3. Mastery slips available after school today
Announcements
Office hours tomorrow
Mastery slips available after school today

4. Unit 4.2: Guiding Questions
How does a cell make sure it has enough water and nutrients?
What happens to the cell in different environments?
How do cells take in the nutrients they need and release the substances they do not?

5. Eggsperiment Part 2 1. Get back in groups/Retrieve eggs.
2. CAREFULLY remove eggs from solution.
3. One person will come use scales. Record your egg’s new mass.
4. Class data collection

6. Partner Relay
With a partner, complete the CLASS COPY on your own sheets of paper.

7. December 9th, 2014
We will be taking our Osmosis quiz. You need a sheet of paper and writing utensil.

8. Agenda
Quiz (10 minutes)
Passive vs. Active Transport Notes and Demonstration (15 minutes)
CFUs (5 minutes)
Passive vs. Active Transport Foldable( 14 minutes)
Exit Ticket (Remaining)
Homework:
Begin studying for Semester 1 exam
Unit 4 Mastery Packets

9. Announcements Office hours today after school
Unit 4 mastery packets due December 15th (NEXT MONDAY)

10. Today’s SPI & Objectives
SPI Compare and contrast active and passive transport.
SWBAT compare and contrast passive and active transport in terms of molecule movement and energy usage
SWBAT distinguish between the two forms of passive transport

11. Passive vs. Active Transport

12. Review Questions
What part of the cell controls what enters and leaves the cell?
Cell/plasma membrane
What macromolecule is the cell membrane made up of?
Lipids
What two words are used to describe the cell membrane? (S and P)
Selectively (semi) permeable

13. Why is this important?
The cell must be able to bring in nutrients that it needs and remove substances that it does not need
Brings in glucose and oxygen for energy
Brings in or takes out sodium and potassium ions for fluid balance
Removes CO2 and water to prevent cell damage or death

14. Types of Cellular Transport
There are two main types of cellular transport that bring molecules into and out of the cell
Passive Transport
Active Transport

15. Concentration
Review: Concentration is the relative amount of substance in a given area
Where is there a higher concentration of molecules in the picture?

16. Passive Transport Key Point 1: In passive transport:
Molecules move from high concentration to low concentration
This is called moving with or down the concentration gradient
Energy is not used

17. Additional Notes: Concentration Gradient
Concentration gradient = uneven distribution of a substance across a border
Example: Balloon has higher concentration inside; when you untie a balloon, air rushes out to reach dynamic equilibrium
Moving from high to low concentration with or down CG
Forced from low to high concentration against CG (Rolling a bolder up a hill)

18. Passive Transport There are two specific forms of passive transport
Diffusion
Facilitated diffusion

19. Diffusion
Key Point 2: Diffusion is passive transport that does not require transport proteins to help move the molecules into or out of the cell
High  low concentration
No energy
Examples: Water and oxygen moving into the cel
Through the phospholipid bilyaer

20. Diffusion Demonstration
Pay attention to how the molecules move
Raise your hand when you can smell the scent
Were energy or anything else used to move the molecules?

21. Facilitated Diffusion
Key Point 3: Facilitated diffusion is passive transport that does require transport proteins (channels or carriers) in the cell membraneto help move the molecules
“Facilitate” means “to help”
High  low concentration
No energy used
Examples: Glucose and amino acids moving into the cell

22. Active Transport Key Point 4: In active transport:
Molecules move from low concentration to high concentration
This is called moving against/up the concentration gradient
Energy must be used

23. Active Transport
Active transport uses transport proteins known as pumps to move the molecules across the cell membrane
Example: Sodium-Potassium ATPase Pump

24. Additional notes: Example Sodium-ATP pump
Requires ATP to move sodium and potassium from areas from low concentration to high concentration
Uses channel/transport/embedded proteins to move through phospholipid bilayer
Must use ATP to change shape to get the molecules through

25. CFUs
Answer each of the next 6 questions on the blanks at the bottom of your notes
Do not call out answers!
I will RANDOMLY call on someone to answer each one.

26. CFU 1
What type of transport moves molecules from low to high concentration?
Answer: Active transport

27. CFU 2 What type of cellular transport does not require energy?
Answer: Passive transport

28. CFU 3 In what direction do molecules move during passive transport?
Into the cell
From high to low concentration
From low to high concentration
Against the concentration gradient
Answer: B. From high to low concentration

29. CFU 4
Nerve cells need to take in sodium (Na+) ions. When do the sodium ions enter using active transport?
When they are negatively charged
When they are too big to move through the transport proteins
When they are moving against the concentration gradient
When they are moving with the concentration gradient
Answer: C. When they are moving against the concentration gradient

30. CFU 5
Some molecules are brought into the cell with the help of transport proteins, but no energy is used. Is this an example of diffusion or facilitated diffusion?
Answer: Facilitated diffusion

31. CFU 6
Draw an arrow showing the direction the molecules would move during active transport?
Answer: 

32. Passive and Active Transport: Foldable
Allows cells to bring in nutrients
Two types: Diffusion/Facilitated diffusion
With the concentration gradient
Low  High Concentration
Requires NO energy
High  Low concentration
Requires energy (ATP)
Against the concentration gradient
Uses transport protein pumps
Type of cellular transport
Fold a piece of construction paper hot dog style. Cut two flaps.
Label one side “Passive Transport”; the other “Active Transport”
You may place “Both” either in the center of your two flaps or on the back
Place the bullet points in the correct place

33. Exit Ticket
Answer the 3 questions below without your notes.
What type of cellular transport moves molecules against the concentration gradient?
What type of cellular transport does not require energy?
Amino acids move into the cell from high concentration to low concentration. Transport proteins help to move them. Is this passive or active AND if passive, is it diffusion or facilitated diffusion?