Mr. Hunter Lecture Structured NotesBiology Chapter 5 Cell Transport12/06/12

Name ________________________ Date ____________ Per#______

1. Diffusion can be defined as the movement of particles from a _________ concentration to a _________________ concentration.

2. The process of diffusion is passive. What does this mean?

3. What is the equilibrium point in terms of diffusion?

4. Osmosis can be defined as_________

5. What does selectively permeable mean?

6. Osmosis is different from diffusion in two major ways. What are they?

7. Briefly define solute, solvent and solution.

8. In which direction does water flow during the process of osmosis?

9. During osmosis, water will always move in a direction to _______ the higher solute concentration.

10. In a Hypotonic solution, water will move into the cell because _______The cell may eventually _________

11. In a Hypertonic solution, water will move out of the cell because ______The cell will ________ because it becomes dehydrated.

12. In an Isotonic solution, water will move in and out of the cell at _______ rates.The cell will not lyse or shrivel.

13. The process of _______ is used for molecules that cannot easily pass through the cell membrane. These molecules may be too large or cannot dissolve (insoluble) in lipids

14. The movement of molecules in facilitated diffusion are assisted by what type of proteins?

15. What does a passive process mean?Why is facilitated diffusion considered to be passive in relation to its concentration gradient?

Review Questions

1. What is the name of the process that occurs when you can smell what is being served in the lunchroom from the 2nd floor?_____________________________________________________

2. What is the difference between active and passive transportation?_____________________________________________