A student cut a piece of onion and placed it on a microscope slide - Edexcel - GCSE Biology - Question 6 - 2018 - Paper 1
Question 6
A student cut a piece of onion and placed it on a microscope slide.
The student then placed this slide on the stage of a light microscope and looked through the eye... show full transcript
Worked Solution & Example Answer:A student cut a piece of onion and placed it on a microscope slide - Edexcel - GCSE Biology - Question 6 - 2018 - Paper 1
Step 1
Use a Thin Layer of Onion
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Answer
To improve visibility of the onion cells, the student should use a single or thin layer of onion. This allows light to pass through more effectively, making it easier to see the cells.
Step 2
Use a Stain
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Answer
Applying a stain or dye to the onion piece can enhance the visibility of the cells and their structures. Staining makes cellular components more prominent, thereby assisting in better observation under the microscope.
