Cheek Cell Lab Procedures

This video tutorial guides students through Part B of a cell lab, focusing on making a slide of cheek cells. It begins with an introduction and preparation steps, followed by a list of materials needed. The video then provides detailed instructions on collecting cheek cells using a toothpick, preparing the slide with methylene blue stain, and observing the cells under a microscope. Key cell structures such as the cell membrane, cytoplasm, and nucleus are identified, although labeling the nucleus is not required.

What is the purpose of using a hair or thread in the cheek cell lab?

• To stain the cells

• To help focus the slide

• To draw the cells

• To clean the slide

Which end of the toothpick should be used to collect cheek cells?

• Neither end

• The flat end

• The sharp end

• Both ends

How many times should you scrape the inside of your cheek with the toothpick?

• 15 times

• 12 times

• 8 times

• 5 times

What is the purpose of adding methylene blue stain to the slide?

• To clean the slide

• To make the cells visible

• To dry the cells

• To remove air bubbles

What should you do after swirling the toothpick in the dye?

• Rinse the slide

• Cover the slide immediately

• Add more dye

• Throw the toothpick away

Why is it important to lower the cover slip slowly onto the slide?

• To dry the slide

• To ensure the cells stick

• To avoid air bubbles

• To prevent the dye from spreading

What is the role of the cover slip in the cheek cell lab?

• To protect the microscope

• To stain the cells

• To hold the cells in place

• To clean the slide

What is the outer edge of the cheek cell called?

• Cell membrane

• Mitochondria

• Cytoplasm

• Nucleus

What color does the cytoplasm appear after staining?

• Red

• Green

• Yellow

• Dark blue

Is it necessary to draw or label the nucleus in your observations?

• Only if instructed

• Yes, always

• No, not required

• Only if visible