Cell structure
Bacteria have very simple cells called “prokaryotic” cells. All other
organisms ( plants, fungi, animals, protists ) have more complicated “eukaryotic”
cells.
A)
Web site name: The Biology Project
Web URL: http://www.biology.arizona.edu/cell_bio/tutorials/pev/page3.html
Read “Eukaryotics”
1).
What is the glycocalyx? _________________________________________
2).
What is the function of ribosomes? _________________________________
3).
What are two functions of the Golgi body? __________________________
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4).
What are two functions of lysosomes? ______________________________
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5).
What is the function of mitochondria? ______________________________
6).
What are “cristae”? ___________________________________________
7).
What are two unusual features of chloroplasts and mitochondria?
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8).
What does this suggest about the origin of chloroplasts and mitochondria?
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B)
Web site name: University of Illinois, Virtual Cell
Web URL: http://www.life.uiuc.edu/plantbio/cell/
Under “Search” click on the down button, highlight “nucleus”, then click on the
main diagram on the left of the screen.
9).
What does the nucleus contain? ___________________________________
Click on “EM image” and click on the main diagram again.
10). Are the pores regularly, or irregularly, spaced? _______________________
11). What is the combination of DNA and proteins called? __________________
Under “Search” click on “chloroplast” then click on the main diagram again.
12). What does “chloros” mean? ______________________________________
13). What else is produced by photosynthesis apart from sugars? _____________
Click on “Cut” then click on the main diagram.
Click on “EM image” then click on the main diagram again.
14). What are “grana”? ______________________________________________
15). What enzyme is found in the stroma? _______________________________
Under “Search” click on “mitochondrion” then click on the main diagram again.
16). What does the mitochondrion produce? _____________________________
Click on “Cut” then click on the main diagram.
17). Where does the Krebs cycle take place? _____________________________
18). What are “cristae”?______________________________________________
Click on “EM image” then click on the main diagram again.
19). Where is NADH oxidized? _______________________________________
C)
Web site name: Cells Alive (Nucleus)
Web site address: http://www.cellsalive.com/cells/cell_model.htm
Click on “Animal Cell”, then click on “Nucleus”
20). What is the nucleus surrounded by? ________________________________
21). How does the nucleus communicate?
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22). Why is a liver cell different from a muscle cell?
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Click on “Nucleolus”
23). What does the nucleolus produce?
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D)
Web site name: Cells Alive (Animation)
Web site address: http://www.cellsalive.com/cells/cell_model.htm
Click on “Animal Cell”, then “Mitochondria”
24). What is the function of mitochondria? _____________________________
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25). What is one similarity between the mitochondria and nucleus?
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26). Why are the cristae folded? _______________________________________
27). What is the primary energy source for the cell? ______________________
Click on “Cell membrane”
28). What does “hydrophilic” mean? __________________________________
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29). What color are the proteins in the diagram? _________________________
30). Which ions move through the proteins? _____________________________
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Click on “Smooth Endoplasmic reticulum”
31). The ER is a continuation of ___________________ __________________
32). What is the function of smooth endoplasmic reticulum in muscle cells?
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33). What is the function of smooth ER in liver cells?
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Click on “Cytoskeleton”
34)
What is the primary importance of the cytoskeleton?
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35)
What color are the stress fibers stained in the photograph? _____________
Click on one more organelle listed near the bottom of the screen.
36)
Which organelle did you click on? ________________________________
37)
Summarize the information about this organelle:
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