Yr7 Cheek Cells

Yr7 Cheek Cells

Your challenge

After this lesson, explain to someone in your family how to prepare and view a cheek cell under a microscope!

Quiz: Parts of an animal cell

Multiple Choice

What is the part of the cell labelled A?

• Mitochondria

• Cell wall

• Cell membrane

• Ribosome

Multiple Choice

What is the part of the cell labelled B?

• Cytoplasm

• Nucleus

• Ribosomes

• Mitochondria

Multiple Choice

What is the part of the cell labelled C?

• Mitochondria

• Ribosomes

• Nuclear

• Nucleus

Multiple Choice

What is the part of the cell labelled D?

• Ribosomes

• Mitochondria

• Measles

• Chloroplasts

Multiple Choice

What is the part of the cell labelled E?

• Mitochondria

• Red dots

• Ribosomes

• Nuclei

Multiple Choice

Name the part where the DNA/genetic information is stored

• Cell membrane

• Cytoplasm

• Nucleus

• Mitochondria

• Ribosome

Multiple Choice

Name the part which lets things in and out of the cell

• Cell membrane

• Cytoplasm

• Nucleus

• Mitochondria

• Ribosome

Multiple Choice

Name the part which is a jelly like substance where chemical reactions happen

• Cell membrane

• Cytoplasm

• Nucleus

• Mitochondria

• Ribosome

Open Ended

Not all cells look like that! Can you name any specialised animal cells?

Multiple Select

Which part do we use to increase or decrease the magnification?

• Eyepiece

• Objective Lens

• Coarse Focusing Wheel

• Fine Focusing Wheel

Multiple Select

Which part do we use first to focus the image?

• Eyepiece

• Objective Lens

• Coarse Focusing Wheel

• Fine Focusing Wheel

Multiple Select

What is the formula to calculate total magnification?

• Total magnification = Magnification of the objective lens + Magnification of the eyepiece lens

• Total magnification = Magnification of the objective lens x Magnification of the eyepiece lens

How to prepare a microscope slide

Cheek Cells

Equipment

What do we need to prepare the slide?

Multiple Choice

Which do you think is the microscope slide?

• A

• B

• C

• D

• E

Multiple Choice

Which do you think is the methylene blue stain?

• A

• B

• C

• D

• E

Multiple Choice

Which do you think is the isotonic solution?

• A

• B

• C

• D

• E

Method

How do we prepare the slide? Return to Zoom to watch the video

Fill in the Blanks

1. Put on your ___ __________.

Multiple Choice

2. Place a small drop of ________ solution on the slide

• isotonic

• spicy

• blue

Fill in the Blanks

3. Rub the toothpick gently along the

of your cheek.

Multiple Choice

4. Place the sample on the _____ by swirling the toothpick around in the solution.

• table

• bottle

• slide

Multiple Choice

5. Use methylene blue to stain the cells because they are ___________.

• colourful

• opaque

• transparent

Multiple Choice

6. Place the _________ over the slide carefully.

• paper

• coverslip

• microscope

Multiple Choice

7. Try to avoid forming air _________.

• balloons

• planes

• bubbles

Fill in the Blanks

8. Use

to soak up excess fluid.

Multiple Choice

9. Load your slide on to the microscope _____.

• lens

• stage

• eyepiece

Multiple Choice

10. Use the objective lens with the ______ magnification first.

• best

• highest

• lowest

Multiple Choice

11. Use the coarse focusing wheel and then the fine focusing wheel to _____ the image.

• magnify

• focus

• enlarge

Poll

What do you think is the total magnification of this image?

• 4x

• 40x

• 400x

• 4000x

Poll

What do you think is the total magnification of this image?

• 500x

• 600x

• 800x

• 1000x

Open Ended

What can you see on the microscope slide?

Open Ended

Why can't we see mitochondria or ribosomes? Is there a way we could see them?

Extended writing task

Describe a method that could be used to prepare and view a cheek cell under the microscope

Describe a method that could be used to prepare and view a cheek cell under the microscope

• In Google Classroom Assignments, choose "Cheek Cell Microscopy Method - Practice" or "Cheek Cell Microscopy Method - Challenge"

• Write a detailed method of how to prepare and view cheek cells under the microscope

• You can watch the video again as a reminder (link is in the instructions)

• Submit your work to Google Classroom