Make a sketch of the epithelial cells that you observe. On your sketch label the plasma membrane, the nucleus and the cytoplasm

Concepts of Biology
1st Edition
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:Samantha Fowler, Rebecca Roush, James Wise
Chapter3: Cell Structure And Function
Section: Chapter Questions
Problem 2ACQ: Figure 3.13 Why does the cis face of the Golgi not face the plasma membrane?
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Question 7. Make a sketch of the epithelial cells that you observe. On your sketch label the plasma membrane, the nucleus and the cytoplasm
Instructions
Cheek cells are the major cell type of the epithelial tissue
lining the inside of your mouth. This epithelium is composed
of many layers of thin, flattened cells. Perform the following
steps to make a wet mount of these cells in order to identify
the three major components of a typical eukaryotic cell.
1. Place a drop of saline solution on a microscope slide.
2. Carefully scrape the inside of your cheek with the blunt
end of a toothpick.
3. Place the cheek scrapings in the drop of saline solution
on the slide and stir with the toothpick.
4. Add a drop of methylene blue to the drop of saline and
stir again.
5. Place a coverslip over the drop on the slide. Use the
folded edge of a piece of paper towel to absorb any
excess fluid.
6. Place the slide on the microscope and observe the
scrapings at low
power. Switch to
the high-power
objective and
examine the scrap-
ings more closely
(Figure 5-4).
7. Make a sketch of
the epithelial cells
that you observe.
On your sketch
label the plasma
membrane, the
nucleus, and the
Mat
O C
Instr
1. I
cytoplasm.
Total magnification:
3.
4.
Transcribed Image Text:Instructions Cheek cells are the major cell type of the epithelial tissue lining the inside of your mouth. This epithelium is composed of many layers of thin, flattened cells. Perform the following steps to make a wet mount of these cells in order to identify the three major components of a typical eukaryotic cell. 1. Place a drop of saline solution on a microscope slide. 2. Carefully scrape the inside of your cheek with the blunt end of a toothpick. 3. Place the cheek scrapings in the drop of saline solution on the slide and stir with the toothpick. 4. Add a drop of methylene blue to the drop of saline and stir again. 5. Place a coverslip over the drop on the slide. Use the folded edge of a piece of paper towel to absorb any excess fluid. 6. Place the slide on the microscope and observe the scrapings at low power. Switch to the high-power objective and examine the scrap- ings more closely (Figure 5-4). 7. Make a sketch of the epithelial cells that you observe. On your sketch label the plasma membrane, the nucleus, and the Mat O C Instr 1. I cytoplasm. Total magnification: 3. 4.
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