Jun 27, 2024 · 5. **Observation Under Microscope:** - Place the slide on the stage of the microscope. - Start with the lowest objective lens (usually 4x or 10x) to locate the cells. - Focus on a clear area where cells are well spread out. 6. **Recording Observations:** - Observe the cells under different magnifications (40x, 100x, and 400x) to see detailed ...

May 30, 2023 · The stain will penetrate the cells. 8. Leave the stain on the slide for a minute or as per the instructions of the stain used. 9. Gently rinse off the excess stain by adding a few drops of distilled water to the edge of the coverslip. 10. Observe the stained cheek cells under a microscope using low power (10x or 20x) and high power (40x or 100x ...

Jun 16, 2024 · Methylene blue helps to stain the cell nuclei, making them visible under the microscope. 3. **Mix Gently:** Gently mix the cheek cells and stain with the toothpick or swab. 4. **Cover Slip:** Place a cover slip over the mixture, taking care to avoid air bubbles. 5. **Observation:** Place the slide on the microscope stage and observe the cheek ...

Jun 20, 2020 · Staining onion peel or cheek cells makes the cell wall more apparent in an onion cell as it enhances contrast when it is seen through a microscope. Methylene Blue is a blue dye which is mainly used for colouring blood, bacteria, and acidic or protein-rich cell structures like the ribosomes, nucleus, and endoplasmic reticulum.

Mar 12, 2019 · A scientist is observing onion cells and human cheek cells under a microscope. Which observation does she most likely make? The onion cells have lysosomes, and the cheek cells do not. The cheek cells have larger vacuoles than the onion cells. The cheek cells have a nucleus, and the onion cells do not.

Dec 28, 2021 · The onion cells would be well arranged beside each other whereas the cheek cells will be irregularly positioned and will lack cell wall, vacuole and chloroplasts. Plant cell (Onion cells) As the onion cells are transparent and the cell organelles cannot be observed under the microscope without staining, Safranin stain is used. It is a stain ...

May 11, 2023 · Requirements: Cheek cells, toothpick, glass slide, needle, watch glass, methylene blue, distilled water, glycerin and microscope. Procedure: 1) To collect the cheek cells, scrapping of the cheek on inner side should be done, to collect appropriate amount of cheek cells.

Aug 4, 2024 · 1. Obtain a cheek cell sample by scraping the inside of the cheek with a cotton swab. 2. Place a small drop of distilled water on a slide. 3. Add a few cheek cells to the water drop. 4. Add a drop of methylene blue stain (if using) to the cells. 5. Place a cover slip over the cells. 6. Observe the cells under the microscope, starting at low ...

Place the slide on the microscope, with 4 x or 10 x objective in position and find a cell. Then view at higher magnification. Human Cheek CellMethylene blue stains negatively charged molecules in the cell, including DNA and RNA. This dye is toxic when ingested and it causes irritation when in contact with the skin and eyes.

Oct 25, 2020 · Human Cheek CellMethylene blue stains negatively charged molecules in the cell, including DNA and RNA. This dye is toxic when ingested and it causes irritation when in contact with the skin and eyes. The cells seen are squamous epithelial cells from the outer epithelial layer of the mouth. The small blue dots are bacteria from our teeth and mouth.