The photograph shows a microscope used in a laboratory - Leaving Cert Biology - Question 6 - 2019
Question 6
The photograph shows a microscope used in a laboratory.
(a) What is the purpose of a microscope?
(b) Name the parts labelled A, B, C in the photograph.
A.
B.
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Worked Solution & Example Answer:The photograph shows a microscope used in a laboratory - Leaving Cert Biology - Question 6 - 2019
Step 1
What is the purpose of a microscope?
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Answer
The purpose of a microscope is to magnify objects so that they can be observed in greater detail. This allows scientists and researchers to examine the structure and functions of small specimens, such as cells, that are not visible to the naked eye.
Step 2
Name the parts labelled A, B, C in the photograph.
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Answer
A. Eyepiece
B. Stage
C. Objective lens
Step 3
Why is the low-power lens used first when focusing on cells?
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Answer
The low-power lens is used first because it is easier to locate cells. The wider field of view and lower magnification allow for better navigation of the specimen.
Step 4
Use the letter F to label the coarse-focus knob on the photograph.
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Answer
The letter F is used to indicate the coarse-focus knob in the diagram.
Step 5
Why would you use a stain when preparing a microscope slide?
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Answer
A stain is used when preparing a microscope slide to enhance the visibility of cells or particular parts of cells. Stains bind to specific cellular components, making them easier to observe under the microscope.
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