4-5 Lab Topic 4: Microscopy
Elodea
Cells at ___X
Elodea
Cells at ___X
Report Sheet—Lab Topic 4
1. Draw and label each of the organisms available.
Cheek Cells at ___X Cheek Cells at ___X
Name _______________________________ Date_____________
Instructor ___________________________ Section___________
_________________________
4-6 Lab Topic 4: Microscopy
2. Fill in the following table:
Compound Microscope Dissecting Microscope
Types of Light
Available
Powers of
Magnification
Available
Type of Glassware that Specimens are
Contained in...
Is a 3-Dimensional
View Possible?
3. Why is it not possible to perform dissection under a compound microscope?
The focus is too high and the stage is too small
4. Why would a compound microscope be useful to a:
a) bacteriologist?
They use these devices to identify the specific types of bacteria
b) forensic scientist?
They view tiny specimen of evidence under the microscope which include skin cells, hair, soil, ink, etc...
c) oncologist?
To search for canerous cells
5. Why would a dissecting microscope be useful to a:
a) jeweler?
To test the authenticity of his precious stones
b) archaeologist?
To use while view artifacts such as bones and fossils, perhaps even when dusting them off
c) field botanist? they use the microscope for viewing plants parts and identifying the different species
6. Suppose that a student was looking at a typed letter “o” using a compound microscope at scanning power. The image is perfectly centered in the field, and in sharp focus. Upon switching to a higher-powered objective, the letter “o” apparently disappeared. Explain.
The focus is too high causing the image to be via the center of the letter "o"
7. Today, you viewed both plant and animal cells using the compound microscope. If you were given a slide of cells that could possibly be from either plants or animals, what characteristics would you use to classify them correctly?
(Hint: think about characteristics of plant cells as discussed in lecture)
Plant cells contain chloroplasts, chlorophyll, cell walls, and large vacuoles
Animal cells do not contain any of these.
8. Can the genetic information contained in your cheek cells be read using a compound microscope? Why or why not?
No, that would have to be done with a higher power of microscope, compound microscopes are not that power full
9. How do Planaria differ from Hydra in their appearance?
Planaria looks similar to worms where as Hydra has these tiny tentacles at the end
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