Download Science 7 Plant and Animal Cells Lab Name Date ______ The

Science 7
Plant and Animal Cells Lab
Name ___________________________________
Date __________
The CELLS Lab
(it’s so popular that it’s a “cellout” every time!)
Purpose: The purpose of this experiment is to ________________________
____________________________________________________________.
Hypothesis: Make a prediction about which cell organelles you will be able to
see using a microscope at low power (100x) and at high power (400x):
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
Procedure & Observations:
Part 1: Cork Cells
Place a prepared cork slide on your microscope stage. Examine the slide
under the lowest power (40x) and then switch to 100x magnification once
you have a focused image. Sketch the image at 100x in the space provided.
Switch to 400x magnification and draw a second sketch.
Magnification: ________
Magnification: ________
1. Label the cell wall of one cell in both sketches.
2. Describe the shape of the cork cells: _____________________________
Part 2: Elodea Cells
Following the directions provided by the teacher, prepare a slide with a leaf
from an elodea plant. Examine the slide under the lowest power (40x) and
then switch to 100x magnification once you have a focused image. Sketch
the image at 100x in the space provided. Switch to 400x magnification and
draw a second sketch.
Magnification: ________
Magnification: ________
1. In both sketches, label any cell structures that you can see.
2. Describe the shape of the elodea cells:
______________________________
3. Which cell structures were visible in the elodea cells that were not visible
in the cork or onion cells?
____________________________
4. Describe the shape AND function of these organelles: ________________
_____________________________________________________________
_____________________________________________________________
Part 3: Onion Cells
Following the directions provided by the teacher, prepare a wet mount slide
of an onion thin section. As with the cork cell sample, focus the specimen at
40x, then switch to 100x magnification. Sketch what you see at 100x:
Magnification: ________
Label the cell wall of one cell.
Describe the shape of the onion cells:
______________________________
Following the directions provided by the teacher, stain your sample using
Lugol’s solution. Observe and sketch your sample again at 100x and then at
400x magnification in the space provided:
Magnification: ________
Magnification: ________
1. Describe the appearance of any cell structures that you were able to see
after staining the sample:
_____________________________________________________________
_____________________________________________________________
2. Label these structures in your sketches above.
Part 4: Human cheek cells
Place a prepared cheeck cell slide on your microscope stage. Examine the
slide under the lowest power (40x) and then switch to 100x magnification
once you have a focused image. Sketch the image at 100x in the space
provided. Switch to 400x magnification and draw a second sketch.
Magnification: ________
Magnification: ________
1. In both sketches, label any cell structures that you can see.
2. Describe the shape of these cells: _____________________________
3. How are the cheek cells different from any of the cells in Part 1, 2, and 3?
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
Analysis Questions
1. Which of the cell types that you observed are considered plant cells?
Which of the cell types that you observed are considered animal cells?
2. Summarize the major differences between plant cells and animal cells,
including differences that you may not have observed during this activity.