Question

Write an activity to study human cheek cells.​

Answer 1

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Materials

Glass microscope slides

Plastic cover slips

Paper towels or tissue

Methylene Blue solution (0.5% to 1% (mix approximately 1 part stock solution with 4 parts of water))

Plastic pipette or dropper

Sterile, individually packed cotton swabs

See information on suppliers here.

Methods

Take a clean cotton swab and gently scrape the inside of your mouth.

Smear the cotton swab on the centre of the microscope slide for 2 to 3 seconds.

Add a drop of methylene blue solution and place a coverslip on top. Concentrated methylene blue is toxic if ingested. Wear gloves and do NOT allow children to handle methylene blue solution or have access to the bottle of solution.

Remove any excess solution by allowing a paper towel to touch one side of the coverslip.

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 Cell

Answer 2

Take a clean cotton swab and gently scrape the inside of your mouth. Smear the cotton swab on the centre of the microscope slide for 2 to 3 seconds. Add a drop of methylene blue solution and place a coverslip on top. ... Place the slide on the microscope, with 4 x or 10 x objective in position and find a cell.

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