Name:
Period:
B i o l o g y - R o b i s k y |1
Cell Transport Web Quest – DAY 1
http://lrobisky10.wikispaces.com/
Click through the following webquest & complete all questions.
CELL MEMBRANE
Website #1: Cell Membrane
 Play the animation to see an overview of the cell membrane.
 Step through the animation a SECOND time. As you do, complete question 1.
1. Draw the cell membrane and label ALL of the parts.
Website #2: Phospholipids
 At this point you have discovered that one of the major components of the cell membrane are phospholipids.
1. Draw a phospholipid. Label the hydrophilic and hydrophobic sections.
2. What happens to phospholipids when they are placed in water?
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Website #3: Construction of the Cell Membrane
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Click through the animation. As you do, match the following:
1
Allow ions and other polar molecules to pass through the
membrane
A
Glycoprotein
2
Only found in animal cell membranes
B
Channel Protein
3
Span the entire membrane and serve as a receptor for the cell.
C
Pore Protein
4
Found on the surface of the membrane, they help identify the cell
D
Fibrous (Integral) Proteins
5
Allow water molecules to pass through the membrane
E
Cholesterol
6. Complete all 10 questions, while doing so, draw a picture of each part:
Glycoprotein
Channel Protein
Pore Protein
Fibrous Protein
Cholesterol
Name:
Period:
B i o l o g y - R o b i s k y |2
Cell Transport Web Quest – DAY 2
Click through the following webquest
& complete all of the questions on a separate piece of paper.
CELL TRANSPORT
1. What is concentration?
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2. What is a concentration gradient?
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3. Copy the box onto your paper and draw a concentration gradient, where the concentration of molecules
on the left is greater than that on the right.
PASSIVE TRANSPORT
Website #5: Passive Transport Review
 Click on passive transport. Then step through the animations.
1. What is passive transport?
2. What are the three forms of passive transport?
3. Why is it important to remember that the cell membrane is fluid?
4. Compare the molecules that can get through the membrane to those that cannot.
5. What is diffusion?
6. Why do we say that diffusion occurs along a concentration gradient?
7. What four factors does the rate of diffusion depend on? Copy the following table onto your paper
and complete it. (You may need to think about this a bit it is not ALL included in the animation…)
Factor
Is the following going to speed up or slow down diffusion?
A steeper gradient?
A higher temperature?
A charged particle?
A smaller, lighter molecule?
8. When does diffusion end?
9. What is facilitated diffusion?
10. What happens to the protein as the molecule passes through?
11. Why is facilitated diffusion needed?
12. What is osmosis?
13. What is the difference between a hypertonic and hypotonic solution?
14. Which way does water move?
Name:
Period:
B i o l o g y - R o b i s k y |3
Website #6: Webquest Quia Quiz (Passive Transport)
 Complete the Quia Quiz on passive transport.
Website #7: Diffusion
 Play the animation to see an overview of diffusion.
 Step through the animation a SECOND time. As you do, complete the following questions:
1. Molecules are in constant
.
2. What is diffusion?
3. Complete the following picture on your paper, with an arrow, as shown in the animation:
Area of higher
Concentration
Area of lower
Concentration
4. When does diffusion stop?
Website #8: Webquest Quia Quiz (Diffusion)
 Complete the Quia Quiz on diffusion.
Website #9: Osmosis
 Read through the website and complete the questions:
15. What is osmosis?
16. What is a hypertonic solution?
17. Play the animation. Draw a picture of what happens to cells in a hypertonic solution.
18. What is a hypotonic solution?
19. Play the animation. Draw a picture of what happens to cells in a hypotonic solution.
20. What is an isotonic solution?
21. Play the animation. Draw a picture of what happens to cells in an isotonic solution.
Based on what you have read copy the following table onto your paper and complete it using the word bank provided:
(Look up any word you do not know!)
Into the Cell
Out of the Cell
Into and Out of the Cell
Cytolysis (Swells & Pops)
Crenates (Shrinks)
Plasmolysis (Shrinks)
Does water move in or out of
the cell?
How does an animal cell
respond?
Hypertonic
Hypotonic
Isotonic
Website #10: Osmosis Gizmo
 Log in: EnamaL939
Password: ant479
 Click ‘launch gizmo’ on the Osmosis Gizmo
Turgor Pressure (Swells)
Stays the Same
Stays the Same
How does a plant cell respond?
Name:

Period:
B i o l o g y - R o b i s k y |4
Look at the picture. Identify the pieces using the key below:
Middle Pink Square = Cell
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Small Turqouse Dots = Water
Large Blue Dots = Solute
Set solute outside to 5 and initial cell volume to 30%.
1. Look at the description tab. How many solute particles are inside the cell?
2. How many solvent particles are inside the cell?
3. What is the concentration?
4. Is the concentration greater inside or outside of the cell?
5. Based on what you know about osmosis will water move into or out of the cell?
Click play, run for 60 seconds and then hit pause.
6. How did the size of the cell change?
7. How did the concentrations change?
8. Did they change because solute or solvent entered the cell? (hint look at the numbers in the
description tab and the numbers in #1)
Click reset, set solute outside to 5 and initial cell volume to 50%.
9. Look at the bar chart tab. Is the concentration greater inside of outside of the cell?
10. Based on what you know about osmosis will water move into or out of the cell?
Click play, run for 60 seconds and then hit pause.
11. How did the size of the cell change?
12. Why did this occur?
Click reset, set solute outside to 5 and initial cell volume to 60%.
13. Look at the bar chart tab. Is the concentration greater inside of outside of the cell?
14. Based on what you know about osmosis will water move into or out of the cell?
Click play, run for 60 seconds and then hit pause.
15. How did the size of the cell change?
Click reset, set solute outside to 1 and initial cell volume to 60%.
Click play, run for 60 seconds and then hit pause.
16. Why did the cell expand in this simulation when it shrunk in the last one?
Website #11: Webquest Quia Quiz (Osmosis)
 Complete the Quia Quiz on osmosis.
END OF DAY 2
Name:
Period:
B i o l o g y - R o b i s k y |5
Cell Transport Web Quest – DAY 3
Click through the following webquest
& complete all of the questions on a separate piece of paper.
ACTIVE TRANSPORT
1. What are the two characteristics of active transport?
2. What are examples of active transport?
Website #12: Active Transport
 Read the Introduction.
1. What is the difference between active and passive transport? (there are 2 differences)
 Click the animation tab (at the top). Then click the step through box. Then click primary active
transport.
 Play the animation. Click continue and play as you go to move forward.
2. What is the name of the membrane protein in the picture?
3. What does it move out of the cell? How much of this does it move?
4. What does it move into the cell? How much of this does it move?
5. Why is this considered a pump?
Website #13: Endocytosis and Exocytosis
 Play the animation to see an overview of endocytosis and exocytosis.
3. What are the three types of endocytosis? What does each type transport?
4. What is the difference between endocytosis and exocytosis?
Website #14: Webquest Quia Quiz (Transport)
 Complete the Quia Quiz on transport.