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Biology: Virtual Cell Webquest
Name___________________Date_________Class____
The Virtual Cell
Log on to Google and type in “Virtual Cell Web page”. Click on the first website
that appears, which is “Virtual Cell Website” www.ibiblio.org/virtualcell/
Click on The Virtual Textbook
Under Biology click on Ch. 3, Cell Biology
In the space below, list all the organelles you see in the 3D image of the cell
Scroll to the part of the web page below the image. You should see a green print of cell
organelles. Your job is to explore each section and complete the following assignments.
TAKE THE TIME TO WATCH ALL ANIMATIONS. They will help you understand HOW an
organelle works as well as how it looks.
CELL MEMBRANE
1.
In the image at the left you can see that it is a _______________ membrane that
completely_________________ the cell.
2.
It also connects the _____________________
_________________ membrane.
_________________, and the
(Click next page at the bottom to continue. From now on, each time you complete a page
you will click on next page when you get to the bottom of a web page.)
Read through each page as you encounter it. Continue through the web site,
watching the animations and completing assignments.
3.
In the space below draw what a close up view of the cell membrane looks like.
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4.
Name the molecule that is the primary molecule of the cell membrane.
5.
Describe the chemical make up of this very important molecule.
6.
Explain what the long chains (blue tail) of this molecule are.
7.
Explain the charge on these two chains.
8.
At the other end of the phospholipid is a ______________group and several double
bonded oxygens. The atoms at this end of the molecule are _______________equally.
This end of the molecule has a charge and is attracted to_____________.
9.
Describe what will happen when this molecule is placed in water (such as the
watery environment inside your body).
10.
From the text define the following terms to the best of your ability.
Hydrophobic –
Hydrophillic –
11.
Which part of the phospholipid molecule is hydrophobic?
12.
How do the hydrophobic lipid tails orient themselves in water?
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13.
What kind of molecules “float” within the phospholipid bilayer?
14.
Name the three categories of these molecules. (You will study each in detail later.)
1)
2)
3)
15.
What famous steroid molecule is found in many cell membranes?
16.
What does it do for the cell membrane?
17.
Name 3 functions of the cell membrane.
1)
2)
3)
18.
Describe carrier proteins found within the cell membrane.
19.
What do carrier proteins do?
20.
Describe channel proteins.
21.
What do channel proteins do?
22.
Describe the diffusion of molecules through the channel proteins.
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23.
Watch the animation of the channel protein USING ENERGY FROM ATP. Tell how
this type of transport is different from the simple diffusion explained earlier.
24.
Tell why marker proteins are important.
25.
What do receptor proteins do?
26.
Define endocytosis.
27.
Contrast exocytosis with endocytosis.
NUCLEUS
1. What does it do?
2. Name its parts.
3. Describe the nature of its membrane (nuclear envelope).
4. What is the purpose of the pores within the nuclear envelope.
5. What is chromatin made of?
6. What is the nucleolus made of?
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7. What is the purpose of the nucleolus?
8. What purpose does the DNA’s information serve?
9. Where is this information encoded within the DNA?
10. Name the four bases of DNA.
11. What does the specific sequence of the bases do?
12. Name and describe the three processes that enable the cell to make protein.
1)
2)
3)
CYTOPLASM
1. List the 4 organelles that function in protein production.
2. Describe the ER.
3. Tell what the ER does.
4. Describe the function of the ribosomes.
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5. Describe the function of the Golgi body (we called it apparatus in class).
6. What is inside the lysosomes?
7. Where are lysosomes made?
8. List the 2 organelles that function in cell energy.
9. What process happens inside the mitochondrion?
10. What process happens inside the chloroplast?
11. What is happening during photosynthesis?
12. A specialty organelle found only in animal cells is the ______________________.
Describe this organelle’s function.
13. Describe this organelle’s structure.
14. What do vacuoles in plant cells do?
15. Where are cell walls located?
16. What do cell walls provide?
17. What kinds of cells have plastids?
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18. Describe chromoplasts.
19. What do leucoplasts contain?
20. What are cilia and flagella?
21. How are they different from each other?
22. What function do cilia and flagella have?
23. Describe their microtubule arrangement.
24. In what kinds of organisms are contractile vacuoles found?
25. What is the function of contractile vacuoles?
Return to the Virtual Cell Webpage HOMEPAGE. You may now enter the Virtual
Cell Tour to review some of the things you have learned about the cell.
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