Name______Period: _____ Date: ______
Cell Transport Mini-Internet Scavenger Hunt
Semi-permeable membranes:
1. Read through the introduction on the first page. In your own words, why is cell
transport critical for the cell?
Click on membranes
2. What is the cell membrane primarily composed of?
3. EXPLAIN what two general characteristics a molecule might have that would
prevent it from passing through the membrane.
Skip Diffusion/Osmosis…we’ll come back to it.
Click on Passive Transport
4. What do we call membrane proteins that facilitate the passage of molecules
across membranes?
5. ListAND DESCRIBEthe general three steps of the passage of a molecule
into acell:
6. True or False and explain: At equilibrium, no molecules move across the
membrane.
7. Passive transporters move molecules from a ______concentration to a
______concentration.
Skip the example about diffusion and osmosis.
Click on Active Transport
8. What is the general difference between Active and Passive transport?
9. Active transporters can move solute from an area of ______concentration
to an area of ______concentration ( ______the concentration gradient).
Be sure to watch the animation, but you can skip the stuff about how nerve cells work.
Solutions
10. What is a solution?
11. Explain the difference between the solute and solvent.
12. List the three steps of making a solution:
13. Define solubility:
14. What three factors can have an impact on solubility?Describe how each affects
solubility.
Diffusion and Osmosis
Read the overview and define all the terms in your own words (tryclicking on them)
15. Diffusion
16. Osmosis
17. Passive transport
18. Thermal motion
19. Concentration gradients
20. Biological membranes
Scroll down to example #3 (diffusion will occur through a permeable membrane)
21. Name the solute: ______
22. Name the solvent: ______
23. What is the solute concentration of side A? ____
What is the solute concentration of side B? ____
24. What is the solvent concentration of side A?____
What is the solvent concentration of side B?____
25. Draw a diagram of the two sides (A and B) and show the movement of solute and solvent across the permeable membrane. Label the concentrations of solute and solvent under both sides.
Osmosis
Just watch the other parts until you get to osmosis.
26. What is osmosis? (in your own words)
27. How is it different from simple diffusion?
28. A hypertonic solution has a ______concentration of ______
relative to anothersolution like the cytoplasm of the cell.
29. Water moves from ______to ______solution.
30. How do water molecules move into/out of the cell? (do they use proteins?)
31. What happens to the cell when you put it in a hypertonic solution?
32. What way does the water move?
33. What happens to the cell when you put it in a hypotonic solution?
34. What way does the water move?
35. What happens to the cell when you put it in an isotonic solution?
36. What way does the water move?
Facilitated Diffusion
37. Give examples of some molecules that are transported via Facilitated Diffusion.
388. In facilitated diffusion what molecule in the membrane helps other molecules to
get in or out?
39. Describe how they do this.
40. Describe whether it goes with or against the concentration gradient.
41. What’s one example in your body?
42. What does it mean that it is specific?
Watch the animation at
Active Transport, Endocytosis, Exocytosis
- through)
43. How is it similar to facilitated diffusion? How is it different?
44. What molecule does the cell use for energy and how much of the cells’ energy is
used?
45. Are molecules moved with the concentration gradient? Explain.
Run this animation (when you get to the page, click the tab for Animation)
Back to last website…
46. Describe what happens for endocytosis.
47. What kinds of molecules do cells move by endocytosis?
There are two different kinds of endocytosis. Name and explain them
48.
49.
50. What cell organelles are involved in exocytosis?
51. Describe what happens in exocytosis.
Run the animation at
Here’s a video of an actual cell (a paramecium) performing exocytosis
If you’re done, here’s a nice little 10 question quiz….
Name: __Answer Key_ Period: _____ Date: ______
Cell Transport Mini-Internet Scavenger Hunt
Semi-permeable membranes:
1. Read through the introduction on the first page. In your own words, why is cell
transport critical for the cell?
To maintain homeostasis, keep balance of things in and out of the cell
Click on membranes
2. What is the cell membrane primarily composed of?
phospholipids
3. EXPLAIN what two general characteristics a molecule might have that would
prevent it from passing through the membrane.
Skip Diffusion/Osmosis…we’ll come back to it.
Click on Passive Transport
4. What do we call membrane proteins that facilitate the passage of molecules
across membranes?
5. ListAND DESCRIBEthe general three steps of the passage of a molecule
into acell:
6. True or False and explain: At equilibrium, no molecules move across the
membrane.
7. Passive transporters move molecules from a ______concentration to a
______concentration.
Skip the example about diffusion and osmosis.
Click on Active Transport
8. What is the general difference between Active and Passive transport?
9. Active transporters can move solute from an area of ______concentration
to an area of ______concentration ( ______the concentration gradient).
Be sure to watch the animation, but you can skip the stuff about how nerve cells work.
Solutions
10. What is a solution?
11. Explain the difference between the solute and solvent.
12. List the three steps of making a solution:
13. Define solubility:
14. What three factors can have an impact on solubility?Describe how each affects
solubility.
Diffusion and Osmosis
Read the overview and define all the terms in your own words (try clicking on them)
15. Diffusion
16. Osmosis
17. Passive transport
18. Thermal motion
19. Concentration gradients
20. Biological membranes
Scroll down to example #3 (diffusion will occur through a permeable membrane)
21. Name the solute: ______
22. Name the solvent: ______
23. What is the solute concentration of side A? ____
What is the solute concentration of side B? ____
24. What is the solvent concentration of side A?____
What is the solvent concentration of side B?____
25. Draw a diagram of the two sides (A and B) and show the movement of solute and solvent across the permeable membrane. Label the concentrations of solute and solvent under both sides.
Osmosis
26. What is osmosis? (in your own words)
27. A hypertonic solution has a ______concentration of ______
relative to another solution like the cytoplasm of the cell.
Run the animation.
28. What happens to the cell?
29. What way does the water move?
30. A hypotonic solution has a ______concentration of ______
relative to another solution like the cytoplasm of the cell.
Run the animation.
31. What happens to the cell?
32. What way does the water move?
33. An isotonic solution has a ______concentration of ______
relative to another solution like the cytoplasm of the cell.
Run the animation.
34. What happens to the cell?
35. Why way does the water move?
Facilitated Diffusion
36. Give examples of some molecules that are transported via Facilitated Diffusion.
37. In facilitated diffusion what molecule in the membrane helps other molecules to
get in or out?
38. Describe how they do this.
39. Describe whether it goes with or against the concentration gradient.
40. What’s one example in your body?
41. What does it mean that it is specific?
Watch the animation at
Active Transport, Endocytosis, Exocytosis
- (click through)
42. How is it similar to facilitated diffusion? How is it different?
43. What molecule does the cell use for energy and how much of the cells’ energy is
used?
44. Are molecules moved with the concentration gradient? Explain.
Run this animation (when you get to the page, click the tab for Animation)
Back to last website…
45. Describe what happens for endocytosis.
46. What kinds of molecules do cells move by endocytosis?
There are two different kinds of endocytosis. Name and explain them
47.
48.
49. What cell organelles are involved in exocytosis?
50. Describe what happens in exocytosis.
Run the animation at
Here’s a video of an actual cell (a paramecium) performing exocytosis
If you’re done, here’s a nice little 10 question quiz….