1. Requires Energy input from cell?
Type of
Transport
Transport Protein Used?
Direction of movement
Requires Energy input from cell?
Classification of transport?
Types of Substances
Simple Diffusion
Facilitated Diffusion
Active Transport

2. CELL MEMBRANE AND CELL TRANSPORT NOTES

3. Standard
Cell Biology
1. a. Students know cells are enclosed within semipermeable membranes that regulate their interaction with their surroundings.

4. What is the cell membrane?
____________________________________________________________________________________________________________

5. The structure of the cell membrane
The cell membrane consists of a lipid bilayer (lipid = fat; bi=2) plus proteins that straddle the bilayer. Attached to the proteins are carbohydrates.
_________________________________________________________________________________________________________

6. Draw the cell membrane

7. Cell Membrane Video

8. You should be able to answer these questions:
Describe the structure of the cell membrane.
How do molecules get into and out of the cell?
What is selective permeability?
What is diffusion and how does it work?
What is facilitated diffusion and how does it work?
What is active transport and how does it work?
What is osmosis and how does it work?
What is the function of transport proteins?

9. Transport through the Cell Membrane

10. Cell membranes are selectively permeable (semipermeable).
Impermeable-
Selectively Permeable (semi permeable)-

11. Transport Through the Membrane
Passive Transport:
________________
__________________________________
Active Transport

12. Simple Diffusion
Notes:

13. Solution-
Solvent-
Solute-
Concentration-

14. Think of living cells like little bags of solutions surrounded by a semipermeable membrane! For the cell to survive, the concentration of solutes must stay within a safe range to maintain homeostasis.

15. Concentration Gradient- when there is a difference in concentrations
High concentration: ________________
Low concentration: ________________
In diffusion, ________________________________________________________________________________________________________________________________________

18. Facilitated Diffusion
Notes:

19. Carrier Proteins

20. Channel Proteins

21. Passive Transport: Facilitated Diffusion

22. Active Transport
Notes:

23. Active Transport

24. Active Transport

26. Other Types of Active Transport
Endocytosis –
Phagocytosis –
Pinocytosis –
Exocytosis –

27. Endocytosis and Exocytosis

28. Osmosis- the diffusion of water
Notes:

29. Concentration Strength
Isotonic –
Hypotonic –
Hypertonic –

30. Osmotic Pressure
Notes:

32. Red Blood Cells in a Hypertonic Solution

34. Plants and Osmosis

35. Applications of Osmosis
Water overdose/intoxication
High concentration of fertilizer kills plants
Water enters the roots of plants
Why drinking salt water can kill you
Why putting salt on a slug or snail kills it
How dialysis machines work
The preservation of foods in salt brines (olives, fish vegetables)  kills bacteria
Refresh wilted salad greens by putting in water

36. Cell Quiz What are two differences between prokaryotes and eukaryotes?
An animal cell is a prokaryotic/eukaryotic cell. (circle the correct answer)
When preparing a wet mount, the cover slip should be put on at an angle to avoid ______.
The ______ contains the DNA and controls the cell.
Diffusion is the movement of molecules from a ______ to a _______ concentration.
If a cell has 95% water and it is placed in a hypertonic solution, water will move out of/into the cell. (circle the correct answer)
_________ are where photosynthesis occurs in plant cells.
A bacteria is a prokaryotic/eukaryotic cell. (circle the correct answer)
On high power, more/less of the cell can be seen. circle the correct answer)
What two things happen to an image when viewed under a microscope?
Choose and explain one of the following: endocytosis, phagocytosis, pinocytosis, or exocytosis.