Preparing Microscope Slides
Preparing an onion skin or cheek cell slide is a core practical skill you must master for your Biology exam.
Why do we use iodine when looking at onion cells?
What is Preparing Microscope Slides?
"Slide preparation is the method of placing a biological specimen on a glass slide with a stain for viewing under a microscope."
What is the main advantage of an electron microscope over a light microscope?
Which formula is used to calculate magnification?
What does higher resolution mean when looking at cells?
Practical Steps
Add a drop of water to a clean slide, then place a thin layer of specimen on top.
Add a stain (like iodine or methylene blue) to highlight structures.
Lower the cover slip slowly to avoid air bubbles.
Always use a thin layer of cells so light can pass through the specimen.
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