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1. Which part of the microscope is used to move the body tube up and down?
A. eyepiece B. fine adjustment C. coarse adjustment D. low power objective
2. What is the wheel under the stage that adjusts the amount of light?
A. body tube B. coarse knob
C. diaphragm D. stage clip
3. Which part supports the entire weight of the microscope?
A. arm B. base C. mirror D. stage
4. What is the first step in focusing the microscope?
A. Use the fine adjustment in low power. . B. Use the fine adjustment in high power. C. Use the coarse adjustment on lowest power.
D. Use the coarse adjustment on highest power.
5. Which of the following liquids can you use to make a wet mount?
A. acid B. ethanol C. methanol D. water
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Answer:
1 C
Coarse Adjustment Knob- The coarse adjustment knob located on the arm of the microscope moves the stage up and down to bring the specimen into focus.
2 C
Diaphragm or Iris: The diaphragm or iris is located under the stage and is an apparatus that can be adjusted to vary the intensity, and size, of the cone of light that is projected through the slide.
3 B
Base: This supports the weight of the microscope.
4 ?
FOCUS ON SPECIMEN, FIRST USING THE COARSE AND THEN THE FINE FOCUS CONTROLS. YOU MAY HAVE TO MOVE THE SLIDE AROUND ON THE STAGE OF THE MICROSCOPE TO BRING THE SPECIMEN INTO THE VIEWING AREA.
5 D
Wet mounts can be made using several different kinds of liquids. Water, immersion oil and glycerin (glycerol) can be used, with water probably being the most commonly used. The source of the water is quite important, especially when observing living specimens.
Answer:
1.a
2.a
3.c
4.b
5.d
Explanation:
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