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."
Which term correctly completes this GCSE Biology equation or calculation statement? A ____ is the total of results ÷ number of results
Which term correctly completes this GCSE Biology equation or calculation statement? ____ change = (final − initial) ÷ initial × 100
Which option correctly completes the statement? In photosynthesis practicals, moving a lamp ____ increases light intensity
Which answer best completes the statement? Control variables are kept the same for a ____ test
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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