1. Preparation of stained temporary mounts of (a) onion peel
2023年5月30日 · 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 ...
2 Nikita observed a slide of cheek cells, first under low power and ...
2020年5月14日 · 2 Nikita observed a slide of cheek cells, first under low power and then high power of a microscope. Under the low power she must have seen a) fewer cells in a darker field of view. (b) more cells in a brighter field of view. (c) more cells in a darker field of view. (d) fewer cells in a brighter field of view.
if onion peel cell and cheek cells are observed through a …
2018年6月15日 · A stain makes the cells more noticeable because they are colorless. They are sometimes characterized as resembling a sunny-side-up fried egg (but transparent). The skin cells of onions under a microscope are transparent as well. They do, however, typically have a distinct cell wall and are rectangular in shape. #SPJ3
how to write experiment of temporary mount of cheek cells in …
6. Observe the cheek cells under the microscope. 7. Record observations and draw diagrams of the cells. *Observations:* - Note the shape and size of the cheek cells. - Observe the nucleus and cytoplasm of the cells. - Note any other features of the cells. *Result:* - Cheek cells are irregularly shaped and have a large nucleus. - The cytoplasm ...
To prepare a temporary Mount of human cheek cells. - Brainly
2020年8月26日 · take a toothpick and gently scrape the inner side of your cheek with it. transfer the trappings to a glass slide. put a drop of water and scrapping. add drop off methylene and put a drop of glycerine over the mount. put Coverslip on the Mount and observe under the compound microscope, first in low power and then in high power.
Why do we stain the onion peel or cheek cells before ... - Brainly
2020年6月20日 · 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.
2. 15 Biology Study Material - Brainly
2024年8月4日 · 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 ...
Experiment: To prepare a temporary mount of onion peel cell and …
2024年6月17日 · 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 ...
Observation of cheek cell under microscope - Brainly
2019年3月13日 · Cover the slide with cover slip and observe under microscope; Wipe the extra stain using filter paper; Observation-human cheek cell with the nucleus in the centre of cell can be observed. Inference-Human cheek cell consists of nucleus, cytoplasm and the cell membrane. Precautions-Wash the spoon thoroughly before using it; Do not scrap it hard ...
Observing cheek cells under microscope - Brainly
2017年7月1日 · 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.
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