Download Procedure - Fort Osage High School

Animal Cell vs. Plant Cell
Name:
Block:
1. Write down two observations you would expect to make if you were looking at a human cheek cell & an
Elodea plant cell.
a)
b)
Cheek
A.
B.
C.
D.
Cell Procedure:
Place a small drop of Iodine onto a clean slide.
Using a toothpick, gently scrape the inside of your cheek.
Place the toothpick tip into the iodine and mix. The iodine stains the cells so you can see them.
Place a cover slip over the cells and view the slide under low power and focus. Switch to the next
highest power and focus. Do the same for the next highest power. Answer Question 2.
Questions:
2. In the box to the right, draw a cheek cell you see the microscope.
DRAW ARROWS to AND LABEL the nucleus, cell membrane, and
cytoplasm.
3. What structure in the cheek cell appeared to stain the darkest?
Elodea Leaf Procedure:
E. Wash the slides and cover slips you have at your station.
F. Prepare a microscopic slide by doing the following:
 Obtain 1 leaf from the Elodea plant. Place the leaf on the microscopic slide.
 Use a clean dropper to place two drops of water onto the leaf.
 Careful to not put fingerprints on the cover slip, place the cover slip over the leaf.
G. On low power (the shortest lens), focus the leaf. Switch to the next highest power (the middle
lens) and refocus. Finally switch to the highest power and locate the cells again.
H. After the cells are in focus, add some salt solution to one side of the cover slip. Touch a paper
towel to the OTHER side of the cover slip to draw the salt solution across the Elodea leaf.
Refocus the cells again and answer Question 4.
4. As best as you can, diagram the network of plant cells you see on the leaf. For one cell, DRAW
ARROWS to AND LABEL the cell membrane, cell wall, cytoplasm, and chloroplasts. (*Note-you won’t
see the nucleus because we did not stain these cells, but there is one there.)
5. Are plant and animal cells eukaryotic or prokaryotic?
6. How does this lab relate to the work of Schlieden?
7. Create a table or graphic organizer that would inform someone about 4 differences between plant &
animal cells.
8. Describe 1 way that plant and animal cells differ from bacteria cells.
a)
9. An onion bulb that you eat is a part of a plant, however an onion cell contains no chloroplast. Why is
this so?
(*Hint: Look up the function of chloroplast and think about what an onion plant looks like).
Time Permitting:
A. Wash the underside of your wrist with soap and water.
B. Stick a piece of tape to the underside of your wrist and remove gently without getting
fingerprints on the tape.
C. Place the tape sticky side up on a microscope slide.
D. Stain the top, sticky side of the tape with 2 or 3 drops of 1% methylene blue solution. (Careful!)
E. Place a cover slip over the sticky tape.
F. Examine with a microscope. Look for cells with low power first and then switch to a higher power.
Animal Cell vs. Plant Cell
Name:
Block:
(Alternative Assignment)
1. Are plant and animal cells eukaryotic or prokaryotic?
2. Create a table that would inform someone about the 4 differences between plant & animal cells.
3. Describe 1 way that plant and animal cells differ from bacteria cells.
a)
4. An onion is a part of a plant, however an onion cell contains no chloroplast. Why is this so?
Look up the function of chloroplast and think about what an onion plant looks like).
(*Hint: