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Cells Alive- Internet Lesson - Go to: www.cellsalive.com
Go to Contents and on the drop down menu click on CELL BIOLOGY. From here, you can access
the links.
Objective: To observe models of various cells and learn their components & functions.
Part A: Click on Cell Models to access this page. Read the information in boxes and
answer the questions below:
1. What are the differences between prokaryotic and eukaryotic cells?
Click on the prokaryotic cell model and answer the following questions:
2. Label the prokaryotic bacterial cell below.
3. What substance is located in the nucleoid region of this cell?
_________________
4. Does this substance appear to be surrounded by a membrane bound nucleus?
5. What is the function of the ribosomes?
6. What is the function of the cell wall?
7. What are flagella, and what is their purpose?
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Part B: Return to the "Cell Biology" link and click on “CELL MODELS”, then click on the
eukaryotic cell picture, click “START THE ANIMATION” and choose then click on
“Animal Cell” to access the information.
For this model, you will need to click on the various
parts of the cell to get the information.
1. Which organelle is the most obvious found in eukaryotic cells,
but not in prokaryotic cells?
2. Do prokaryotic cells still have DNA?
Sketch each of the following:
Mitochondria
3. What do mitochondria do?
4. What are mitochondria comparable to in size?
Lysosome
5. What does the Golgi Apparatus do?
6. What is the function of the smooth ER?
Centrosomes
(centrioles)
7. Where is the nucleolus found?
8. What does the nucleolus do?
9. What does the cytoskeleton do?
Golgi Apparatus
10. What is the function of the lysosome?
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Rough ER
Part C: Return to “Plant and Animal Cell Animation” then click
on “Plant Cell” to access the information.
1. What polysaccharide makes up the cell wall?
Chloroplast
2. What organelle makes the plant cells green?
3. What is the function of the rough ER?
4. In plant cells, what does the vacuole do?
Vacuole
Part D: PROCEED TO CELL QUIZ!
Go to: http://www.biologycorner.com/quiz/qz_cell_parts.html
Write your answer to #1-10 from the cell quiz on the line as you go. Include your
score at the bottom once it is corrected.
1. ___________________________
6. ___________________________
2. ___________________________
7. ___________________________
3. ___________________________
8. ___________________________
4. ___________________________
9. ___________________________
5. ___________________________
10. ___________________________
Score (%) = _________
Part F: Concept Check: (No website) Place a check in the box if the cell has it! Use
your notes and cells alive website to help you!
Organelle
Plant
Animal
Bacteria
Organelle
Plant
Animal
Bacteria
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1. Chloroplast
7. Vacuole
2. Ribosome
8. Golgi Bodies
3. Mitochondria
9. Centrioles
4. DNA
10. Lysosomes
5. ER
11. Nucleolus
6. Cell Wall
12. Cell Membrane
Part E: Molecular Transport: Diffusion & Osmosis
Go to: http://www.phschool.com/science/biology_place/labbench/lab1/concepts.html
Complete the lab bench activity, by answering the questions and clicking the right button at
the bottom of the page when done with the step.
1. What is diffusion? Click on term for definition!
2. What is osmosis? Click on term for definition!
Take a closer look & ANIMATE
3. What does it mean for a molecule to move ‘down its
concentration gradient’?
Take a closer look & ANIMATE
4. What molecule appears to be larger… iodine or starch?
5. What happens when iodine and starch mix?
6. What is the movement of water influenced by?
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7. What is a HYPOtonic solution?
8. What is a HYPERtonic solution?
9. What is an ISOtonic solution?
10. Will there be a net movement of water between two isotonic
solutions?
11. What will happen to a red blood cell placed in distilled water?
12. Why doesn’t this happen to red blood cells in the bloodstream?
13. Why doesn’t this happen to plant cells?
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