Name _________________________
Period ________________________
Date __________________________
Prokaryote or Eukaryote? That is the Question.
Using a microscope and your extensive knowledge on what is inside of a cell, you
will study cells of prokaryotes and eukaryotes.
Materials:
-Yogurt
-Plain slides
-eyedropper
-water
-Prepared slides of Euglena, onion cells, and Anabena.
-Cover slips
-Compound microscope
Part A
Procedure:
1. Using your finger, spread the yogurt on the blank slide. (You only need a
spot about a cm in diameter.)
2. Add a drop of water to the yogurt and cover the drop with a cover slip.
3. Examine your prepared slide under high power using a compound
microscope.
4. In the analysis section draw a picture of what you see.
Analysis:
1. Draw a picture of what the yogurt looks like under the microscope.
2. The organism you saw is the bacteria, Lactobacillus. What cell structures
should this organism have?
Part B
Procedure:
1. Look at each of the prepared slides (Euglena, Onion Cells, and Anabena.)
2. Draw a picture of each and then answer the questions below.
Analysis:
Euglena
Anabaena
Onion Cell
Questions:
1. Anabaena is a prokaryote, Euglena is a single-cell eukaryote, and onions
are plants. What 5 structures should all of these organisms have?
2. Name three organelles you would expect the onion cell to have that
Anabaena is missing.
3. If Mr. Smikahl gave you a mystery slide and you were able to see cells that
had a cell membrane, nucleus, mitochondria, but no chloroplast or cell wall,
what type of cell would you be looking at? How do you know?