Download Cellular Transport WebQuest

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Name:_____________________________________
Period: 1 2 3 4 5 6 7 8 9
Cell Membrane Webquest
Part 1-Go to Mr. Downs’s Website (SOTA, teacher, Downs). Use my website and use the calendar to
answer the following questions:
1). We have ____________school days off for the Thanksgiving Holiday.
2). The next lab we will be doing in class is the ____________________________________Lab.
3.) The file for this Internet activity is located in “Files and Forms”. You may find it easier to copy and paste the
addresses from the blank form instead of typing each one in.
Part 2 - “ Components of a Cell Membrane" http://www.biologymad.com/cells/cellmembrane.htm
1. Cell Membranes are made up of.
______________________
______________________
_____________________
Lipids
2. How are phospholipids arranged?____________________________________________________________
3. The _______ layer acts as a barrier to all but the __________molecules.
4. Animal cell membranes contain _______________linking the fatty acids together and so stabilizing and
strengthening the membrane.
Proteins
1. ______________ usually span from one side of the phospholipid bilayer to the other (integral proteins)
2______________ proteins sit on one the surfaces of the cell membrane.
3Proteins comprise about ______ of the mass of membranes, and are responsible for most of the membrane's
properties.
4_______________ proteins that span the membrane are usually involved in transporting substances across the
membrane.
5________________proteins are often attached to the cytoskeleton and are involved in maintaining the cell's
shape, or in cell motility. They may also be enzymes, catalyzing reactions in the cytoplasm.
Carbohydrates
1. Where are carbohydrates found in eukaryotic cell membranes?_________________________________
______________________________________________________________________________________
2. Proteins with carbohydrates attached are called __________________.
3. Phospholipids with carbohydrates attached are called _____________________________.
4. Carbohydrates are short polysaccharides composed of different ____________________ .
5. and form a ________________ outside the cell membrane.
6. What are the functions of the glycocalyx? ________________________________________________
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___________________________________________________________________________________
Part 3 “ Cell Membrane" http://www.wisc-online.com/objects/index_tj.asp?objID=AP1101
1. Step through the animation once to get an overview of a cell membrane. If you have earbuds, you can plug it
in and listen to the animation
2. Draw a cell membrane and label all the parts as you step through the animation a second time. Read each
slide as you will be taking a practice quiz to see what you have learned.
3. Take the practice quiz beginning on slide 23. You will given multiple opportunities to answer the question
until you get it right.
4. How many question did you get right the first time?________ second time?__________
Part 4 - Diffusion and Osmosis http://www.mun.ca/biology/Osmosis_Diffusion/tutor2.html
1. Read the overview and define all the terms
Diffusion-_________________________________________________________________________________
Osmosis –_________________________________________________________________________________
Passive Transport -__________________________________________________________________________
Thermal Motion -___________________________________________________________________________
Hypertonic-________________________________________________________________________________
Hypotonic-________________________________________________________________________________
Isotonic-__________________________________________________________________________________
Concentration Gradients -_____________________________________________________________________
Solutions -_________________________________________________________________________________
Sovent-___________________________________________________________________________________
Biological Membranes -______________________________________________________________________
Scroll down to example #1 (how perfume spreads throughout a room) and read it. Summarize what you read:
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__________________________________________________________________________________________
__________________________________________________________________________________________
Next scroll down to example #2 (salt dissolving in water) and read it. Summarize what you read: __________
__________________________________________________________________________________________
__________________________________________________________________________________________
Next scroll down to example #3 (diffusion will occur through a permeable membrane)
2. What is the solute concentration in side A? ____________________________________
What is the solvent concentration in side A? ____________________________________
3. What is the solute concentration in side B? _____________________________________
What is the solvent concentration in side B? ____________________________________
4. 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.
Part 5- Osmosis http://www.biologycorner.com/bio1/notes_diffusion.html
1. What is equilibrium? __________________________________________________________________
2. What is a selectively permeable membrane?________________________________________________
____________________________________________________________________________________
3. What is Osmosis? _______________________________________
4. An isotonic solution has the _____________ concentration of _______________ as another
solution like the cytoplasm of the cell.
Which way does the water move? ________________________________
What happens to a cell when it is placed in an isotonic solution? _____________
What does iso mean?____________________________
5. What does hypo mean?___________________________
A hypotonic solution has a _________________concentration of _______________ relative to
another solution like the cytoplasm of the cell.
What happens to a cell when it is placed in a hypotonic solution?
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Which way does the water move? ___________________________
What happens to the cell? _________________________________
6. What does hyper mean?___________________________
A hypertonic solution has a _______concentration of _________ relative to another solution
like the cytoplasm of the cell
What happens to a cell when it is placed in a hypertonic solution?
Which way does the water move? _____________________________
What happens to the cell? __________________________________
Part 6 Phagocytosis
http://www.stolaf.edu/people/giannini/flashanimat/cellstructures/phagocitosis.swf
Run the animation of phagocytosis.
1. Phagocytosis involves bringing a large particle into the cell. Rerun the animation and describe the
process? Draw a diagram to help with your explanation ___________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
_____________________________________
2. Do you think this activity would require energy? _________
3. From your knowledge of the cells and mitochondria, what is the energy molecule called that would be needed
to carry out phagocytosis? ___________________________________
.
Part 7 -Quiz
http://www.biologycorner.com/quiz/qz_diffusion.html
Score: _____
Part 8-Read Study Guide:
http://www.biologycorner.com/worksheets/diffusion_osmosis_review.html
What organelle do you think digests the incoming particle? __________________________