Question

Observing human cheek cells
cheek cells lab activity process
















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Answer 1

Answer:

Real Lab Procedure

• Gently scrape the inner side of the cheek using a toothpick, which will collect some cheek cells.

• Place the cells on a glass slide that has water on it.

• Mix the water and the cheek cells using  a needle and spread them.

• Take a few drops of Methylene blue solution using a dropper and add this to the mixture on the slide.

• After 2-3 minutes remove any excess water and stain from the slide using a blotting paper.

• Take a few drops of glycerine using a dropper and add this to the test mixture.

• Take a clean cover slip and lower it carefully on the mixture with the aid of a needle.

• Using a brush and needle, press the cover slip gently to spread the epithelial cells.

• Remove any extra liquid around the cover slip using a blotting paper.

• Place this glass side on the stage of the compound microscope and view it.

Observations

• A large number of flat and irregular-shaped cells are observed.

• The cells do not have a cell wall. However, each cell has a thin cell membrane.

• A deeply stained nucleus is observed at the center of each cell.

• No prominent vacuoles are observed in the cells.

Conclusion

• As the cells observed do not have a cell wall, nor a prominent vacuole, the cells of the specimen on the slide are animal cells.