8. (a)
(i) Identify with a label X, the eyepiece on the diagram of the light microscope - Leaving Cert Biology - Question 8 - 2021
Question 8
8.
(a)
(i) Identify with a label X, the eyepiece on the diagram of the light microscope.
(ii) Identify with a label Y, the stage or platform on the diagram of the l... show full transcript
Worked Solution & Example Answer:8. (a)
(i) Identify with a label X, the eyepiece on the diagram of the light microscope - Leaving Cert Biology - Question 8 - 2021
Step 1
Identify with a label X, the eyepiece on the diagram of the light microscope.
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Answer
The eyepiece, labeled X in the diagram, is the lens through which the specimen is viewed.
Step 2
Identify with a label Y, the stage or platform on the diagram of the light microscope.
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Answer
The stage, labeled Y, is where the slides containing the specimens are placed for observation.
Step 3
Name a plant you used to obtain the sample of cells.
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Answer
One suitable plant to obtain the cell sample is the onion.
Step 4
How did you prepare an unstained plant cell sample for examination under the light microscope?
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Answer
To prepare an unstained plant cell sample, cut or peel a thin slice of the onion, place it on a microscope slide, add a drop of water, and carefully lower a cover slip over it to avoid air bubbles.
Step 5
What stain did you add to the cells?
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Iodine solution was added to the cells to enhance visibility.
Step 6
What was the purpose of the stain?
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The purpose of the stain is to make the cells stand out, enabling easier observation of their structures.
Step 7
How did the objective lens help you to see your stained cell sample?
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The objective lens magnifies the image, allowing for a more detailed view of the stained cell structures.
Step 8
Give one cell structure that showed you were looking at plant cells.
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The cell wall or large vacuole, or chloroplasts are specific structures that indicate the sample is from a plant cell.
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