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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
Explain two ways this method could be improved to see details of the onion cells.
Answer
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Use a Single Thin Layer: To improve visibility, the student should ensure that a single or thin layer of onion is used on the slide. This would allow light to pass through more effectively, making the cells more visible under the microscope.
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Utilize Stains: The student could apply a stain or dye to the onion cells. This would enhance the contrast between the cells and the background, making the cellular structures more distinct and easier to observe.