Microscopes and measuring cells Quiz
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5 questions, one answer each
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1. A drawing of a cell is 20 mm long. The actual cell is 0.05 mm long. What is the magnification?
- A. ×1
- B. ×40
- C. ×400
- D. ×4000
2. A cell is 0.2 mm long. What is this in micrometres?
- A. 0.0002 µm
- B. 2 µm
- C. 20 µm
- D. 200 µm
3. Which statement about electron microscopes is correct?
- A. They have a greater resolution than light microscopes
- B. They use visible light
- C. They have a lower magnification than light microscopes
- D. They are cheaper than light microscopes
4. An image is ×500 magnified and is 15 mm long. How long is the real object?
- A. 0.003 mm
- B. 0.03 mm
- C. 7500 mm
- D. 0.3 mm
5. Which is the correct way to start using a light microscope?
- A. Use the highest-power objective and the fine focus
- B. Use the lowest-power objective and the coarse focus
- C. Use the lowest-power objective and the fine focus
- D. Use the highest-power objective and the coarse focus