Worksheet: Using Microscopes

In this worksheet, we will practice recalling how to use light microscopes, calculate magnification and compare different types of microscopes.

Q1:

Which of the following statements about light and electron microscopes is correct?

  • AElectron microscopes have a higher resolution and a higher magnification than light microscopes.
  • BLight microscopes have a higher magnification and higher resolution than electron microscopes.
  • CElectron microscopes have a higher resolution but a lower magnification than light microscopes.
  • DLight microscopes have a lower magnification but a higher resolution than electron microscopes.

Q2:

A red blood cell is viewed under a microscope as 4 mm wide. The actual width of the cell is 0.8 mm. What is the magnification of the image?

  • A × 5 0
  • B × 5 0 0
  • C × 2 0
  • D × 5
  • E × 2

Q3:

Fill in the blanks: Magnification = size/ size.

  • Aimage, magnification
  • Bimage, actual
  • Cactual, image
  • Dactual, magnification

Q4:

If a bacteria cell is 9 micrometers wide, how wide is it in millimeters?

Q5:

If the eye of a flea is 0.001 millimeters wide, how wide is it in nanometers?

Q6:

The Ebola virus is 80 nm long. Under a microscope, it appears to be 1 mm long.

What is the length of the image of the virus in nanometers?

What is the magnification of this image?

  • A 12,500x
  • B100x
  • C8x
  • D80x
  • E 1,250x

Q7:

If a fungus is 2,000 micrometers long, how long is it in millimeters?

Q8:

A plant cell is viewed under a microscope. The diameter of the cell in the image produced is 25 mm. The image has been magnified 1,000x. What is the cell’s actual diameter?

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