WebbCreate a sketch of the “cheek” cell (as squamous epithelial cells are sometimes called) in the circle provided. Then label the cell membrane, cytoplasm, and nucleus of the “cheek” … Webb9 sep. 2024 · Human Cheek Cells Figure 3. Human cheek cell at 400x zoom. The human cheek is lined with epithelial cells. They will be used today for you to observe a eukaryotic animal cells and its nucleus. You will scrape and stain a sample of your cheek cells with the dye methylene blue. The dye will allow you to clearly stain the nuclei of the cells.
Cell Structure and Function
Webb19 okt. 2024 · Add a single droplet of water squeezed from a plastic pipette onto the center of the slide. Rotate the toothpick in the water to release the human cheek cells into the drop of water. Next, add one drop of methylene blue to the water and cell solution to stain the cheek cells. This will allow you to more easily see them during observation. WebbUsing the compound microscope, look for small, red chromoplasts within the cells. Next, look for breaks in the regions between the cells. These are the plasmodesmata. Draw … indiana university northwest email
How do we know about mitochondria and other cell structures?
WebbPlace the slide on the microscope, with 4 x or 10 x objective in position and find a cell. Then view at higher magnification. Methylene blue stains negatively charged molecules in the cell, including DNA and RNA. This … WebbSketch a single cheek cell. Label the cellular components you recognize. Add any additional structures observed to your sketch after staining was completed. (The circle represents the field of view through the microscope.) 2. After comparing the wet mount and the stained cheek cells, describe the advantage gained by staining cells. 3 2. WebbGently scrape the inside of your cheek with the flat side of a toothpick. Scrape lightly. 3. Stir the end of the toothpick in the stain and throw the toothpick away. 4. Place a coverslip onto the slide 5. Use the SCANNING objective to focus. You probably will not see the cells at this power. 6. Switch to low power. indiana university northwest online courses