Cells Alive- Internet Lesson
URL: www.cellsalive.com
Objective: You will look at computer models of cells, learn the functions and the
descriptions of the cells and their components.
Navigating the site: Cells.alive has a navigation bar at the left. After accessing
the page, click on CELL BIOLOGY on the leftside navigation bar. From here, you will access the links: "How Big is a..", the
animal cell model, the plant cell model, and the bacterial cell model.
Part A. "HOW BIG IS A...."
Here you will look at objects found on the head of a pin. Your job is to rank them
in order of size on the chart below and estimate the length of each (in nanometers, micrometers, or millimeters). The line
in the bottom right corner of the screen is used to help you estimate. Sketch each of the objects.
|
Object |
Sketch |
Size in nanometers, micrometers or millilmeters |
| Human hair |
|
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| Dust Mite |
|
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| Red Blood Cells |
|
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| E. coli |
|
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| Staphylococcus |
|
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| Ebola virus |
|
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| Rhinovirus |
|
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Part B: Bacterial Cell Model - (you will need
to return to the "Cell Biology" link to access this page, or hit your back button)
Part C; Animal Cell Model - (you
will need to return to the "Cell Biology" link to access this page, or hit your back button)
For this model, you will need to click on the various parts of the cell to go to
a screen that tells you about the parts. Answers to the following questions are found there.
|
1. What do mitochondria do?
2. How big are mitochondria?
3. What does the Golgi Apparatus do?
4. What is the difference between smooth and rough ER?
5. Where is the nucleolus found?
6. What does the nucleolus do?
7. What does the cytoskeleton do?
8. Cytosol goes by what other name?
9. What is the function of the cytosol?
10. What is the function of the lysosome?
|
Sketch each of the following.
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Mitochondria
|
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Lysosome
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Golgi Apparatus
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Rough ER
| |
Part D: Plant Cell Model - (you will need to return to
the "Cell Biology" link to access this page, or hit your back button)
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1. What other type of cell has a cell wall?
2. What makes the plant cells green?
3. In plant cells, what does the vacuole do?
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Sketch the following
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Part E: Overview
For the chart below, place a check in the box if the cell has that component.
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Plant |
Animal |
Bacteria |
| Chloroplast |
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| Vacuole |
|
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| Ribosome |
|
|
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| Mitochondria |
|
|
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| DNA |
|
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| Endoplasmic Reticulum |
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| Cell Wall |
|
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| Golgi Apparatus |
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