Question 1

A specimen viewed under a microscope extends across one-third of a field diameter measured at 6 mm. What is the estimated length of the specimen in micrometers ($$\mu m$$)?

Accepted Answer

2,000 $$\mu m$$

Question 2

Which metric unit is most appropriate for measuring the diameter of a typical human cell?

Accepted Answer

Micrometer ($$\mu m)$$

Question 3

If a microscope field diameter is 4 mm and you observe a bacterium that covers 1/20th of the field, what is the approximate length of the bacterium in nanometers (nm)?

Accepted Answer

200,000 nm

Question 4

Convert 0.5 mm to micrometers ($$\mu m).$$

Accepted Answer

500 $$\mu m$$

Question 5

Which of the following correctly matches the metric unit with its abbreviation and equivalent?

Accepted Answer

Millimeter (mm): $$10^{-3} m$$

Question 6

A microscope field diameter is measured at 2 mm. If a specimen covers 0.25 mm, what fraction of the field does it occupy?

Accepted Answer

$$\frac{1}{8}$$

Question 7

If you increase the magnification of a microscope, what happens to the field diameter?

Accepted Answer

It decreases

Question 8

A nanometer (nm) is how many times smaller than a millimeter (mm)?

Accepted Answer

$$10^{6}$$

Question 9

Which metric unit would be most appropriate for measuring the thickness of a cell membrane?

Accepted Answer

Nanometer (nm)

Question 10

A field diameter is 1.5 mm. If a specimen covers 750 $$\mu m$$, what percentage of the field does it occupy?

Accepted Answer

50%

Question 11

If a microscope field diameter is 3 mm and you observe a structure that is 1,500 $$\mu m$$ long, what fraction of the field does it occupy?

Accepted Answer

$$\frac{1}{2}$$

Question 12

Which of the following is the correct conversion for 0.01 cm to meters?

Accepted Answer

$$1 	imes 10$$^{-4}$$ m

Question 13

A specimen is measured at 0.002 m. What is its length in millimeters (mm)?

Accepted Answer

2 mm

Question 14

If a cell is 10 $$\mu m in $$diameter, how many nanometers (nm) is this?

Accepted Answer

10,000 nm

Question 15

Which metric unit is equivalent to $$10^{-6}$$ meters?

Accepted Answer

Micrometer ($$\mu m)$$

Question 16

A microscope field diameter is 5 mm. If you observe a structure that is 2,500 $$\mu m$$ long, what fraction of the field does it occupy?

Accepted Answer

$$\frac{1}{2}$$

Question 17

Which of the following is the correct conversion for 1 nm to meters?

Accepted Answer

$$1 	imes 10$$^{-9}$$ m

Question 18

If a microscope field diameter is 8 mm and you observe a structure that is 4 mm long, what percentage of the field does it occupy?

Accepted Answer

50%

Question 19

Which metric unit would be most appropriate for measuring the length of a nerve fiber that is 1 meter long?

Accepted Answer

Meter (m)

Question 20

A specimen is measured at 0.000001 m. What is its length in micrometers ($$\mu m$$)?

Accepted Answer

1 $$\mu m$$

Microscope Field and Metric Units of Length

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