Onion Cell Slide Preparation Quiz

What is the first step in preparing a slide with an onion cell?

• Placing the onion under a microscope

• Applying stain to the onion

• Obtaining a thin piece of the onion membrane

• Cutting the onion into small pieces

Why is it important to clean an old slide before using it?

• To make it look new

• To remove any previous stains

• To ensure there are no contaminants

• To make it easier to handle

Which stain is used for onion cells in this preparation?

• Water

• Methylene blue

• Iodine

• Eosin

What should you do if air bubbles form under the cover slip?

• Add more stain

• Ignore them

• Lift and lower the cover slip slowly

• Use a paper towel to remove them

How can you adjust the fluid level if there is too much liquid on the slide?

• Remove the cover slip and start over

• Use a paper towel to dab the edges

• Tilt the slide to let it drip

• Add more stain