Distinguish clearly between a eukaryotic cell and a prokaryotic cell, by writing a brief sentence on each - Leaving Cert Biology - Question 8 - 2022
Question 8
Distinguish clearly between a eukaryotic cell and a prokaryotic cell, by writing a brief sentence on each.
Eukaryotic:
Contains a nucleus or organelles enclosed by ... show full transcript
Worked Solution & Example Answer:Distinguish clearly between a eukaryotic cell and a prokaryotic cell, by writing a brief sentence on each - Leaving Cert Biology - Question 8 - 2022
Step 1
Which image, A or B, represents plant tissue?
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Answer
Image B represents plant tissue.
Step 2
Give a reason for your answer at part (b) above.
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Answer
Cells in image B have a more irregular shape and are joined together, indicating they are plant cells, while image A appears more structured.
Step 3
Identify structure Z.
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Answer
Structure Z is the nucleus.
Step 4
When examining cells with a microscope:
1. Name a stain that can be used.
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Methylene blue or iodine.
Step 5
2. Give one benefit of using a stain.
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Stains make cells more visible or easier to see.
Step 6
The image of the cell in A was 2 cm wide. What is the actual width of this cell?
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The actual width of the cell is 0.005 cm (2000 µm) when using the scale from the magnification 400x.
Step 7
Describe the steps taken to view these cells at x400.
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Answer
To view the cells at x400:
Start with the low power objective lens.
Center the specimen under the lens using the mechanical stage.
Switch to the x40 objective lens.
Adjust the fine focus to get a clear image.
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