Download Advanced Biology Mr

Advanced Biology
Name:
Mr. Petryszak
Period:
Date:
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work of another student nor did I give my completed work to another student.
Analysis: Cell Observation Lab
Cork
1. What name is given to the small units making up cork and all living organisms?
2. Briefly describe the appearance of theses units as you observed them in the cork samples.
3. Briefly describe the contents of the cork cells observed.
Hint: Are the cork cells filled or empty?
4. Are the cork cells that you observed alive? Explain your answer regarding experimental
evidence and specific organelles observed.
5. What specific cell organelle is readily observable in the cork cells?
6. What carbohydrate chemically makes up this organelle?
7. Explain why Robert Hooke coined the word cell when he observed these units.
Onion
8. Describe the general appearance of the onion cells in terms of shape.
9. What cellular organelles were observed?
10. Within the nucleus of the onion cell are two distinct structures. Identify these structures and
indicate their cellular function.
11. What was the advantage of staining the onion cells for observation?
Elodea
12. Describe the general appearance of the elodea cells in terms of shape.
13. What cellular organelles were observed?
14. Within the cytoplasm are numerous green organelles. Identify these structures and indicate
their cellular function.
15. Explain why the above structures were not observed in the onion cell.
Cheek
16. Describe the general appearance of the cheek cells in terms of shape.
17. What cellular organelles were observed?
18. Explain why the cell wall, which was observed in the cork, onion and elodea cells, was not
observed in the cheek cells.
19. Briefly describe the appearance of the cytoplasm of the cheek cells.
20. What experimental evidence do you have that these cells were alive in addition to the fact
that you removed them from a living organism?
General Lab Questions
21. List a minimum of three cell structures which would be found in all living plant and animal
cells.
22. What was the single structural difference always observed between the plant and animal cells
that you observed?
23. Briefly explain why, using structural differences, the animal cell that you observed
appeared to be less regularly shaped and rigid than the plant cells that you observed.