A Complete Test Bank For Burtons Microbiology for the Health Sciences, 10th Edition Paul G Engelkirk, Janet Duben Engelkirk, Engelkirk

A Complete Test Bank For Burtons Microbiology for the Health Sciences, 9th Edition Paul G Engelkirk, Janet Duben Engelkirk, Engelkirk

1.

A millimeter is equivalent to how many 

nanometers?

A) 1,000

B) 10,000

C) 100,000

D) 1,000,000

A) 100

B) 1,000

2.

Assume that a pinhead is 1 mm in diameter.  

C) 10,000

D) 100,000

How many spherical bacteria (cocci), lined up

side-by-side, would fit across the pinhead.

(Hint: Use information from Table 2-1.)

3.

What is the length of an average rod-shaped 

bacterium (bacillus)?

A) 3 µm

B) 3 nm

C) 0.3 mm

D) 0.03 mm

A) 40

B) 50

C) 100

D) 400

4.

What is the total magnification when using 

the high-power (high-dry) objective of a

compound light microscope equipped with a

× 10 ocular lens?

5.

How many times better is the resolution of the

transmission electron microscope than the

resolution of the unaided human eye?

A) 1,000

B) 10,000

C) 100,000

D) 1,000,000

5. transmission electron microscope than the

resolution of the unaided human eye?

A) 1,000

B) 10,000

C) 100,000

D) 1,000,000

6.

How many times better is the resolution of the

transmission electron microscope than the

resolution of the compound light microscope?

A) 100

B) 1,000

C) 10,000

D) 100,000

7.

A) 100

B) 1,000

C) 10,000

D) 100,000

How many times better is the resolution of the

transmission electron microscope than the

resolution of the scanning electron

microscope?

8.

The limiting factor of any compound light

microscope (i.e., the thing that limits its

resolution to 0.2 µm) is the:

A) number of condenser lenses it has.

B) number of magnifying lenses it has.

C) number of ocular lenses it has.

D) wavelength of visible light.

9.

Which one of the following individuals is

given credit for developing the first

compound microscope?

A) Anton van Leeuwenhoek

B) Hans Jansen

C) Louis Pasteur

D) Robert Hooke

10.

A compound light microscope differs from a

simple microscope in that the compound light

microscope contains more than one:

A) condenser lens.

B) magnifying lens.

C) objective lens.

D) ocular lens.

Use the following to answer questions 11-15:

Match the following items with the correct phrases.

a. 10

b. 100

c. 1,000

d. 1,000,000

e. 1,000,000,000

11. The number of nanometers in a micrometer.

12.

The resolving power of the compound light

microscope is __________ times better than

the resolving power of the unaided eye.

13. The number of micrometers in a millimeter.

14.

The resolving power of the transmission 

electron microscope is __________ times

better than the resolving power of the

scanning electron microscope.

15.

The resolving power of the transmission 

electron microscope is __________ times

better than the resolving power of the unaided

eye.

Use the following to answer questions 16-20:

Match the following items with the correct phrases.

a. 0.2 nm

b. 20 nm

c. 0.2 µm

d. 1 µm

e. 0.2 mm

16. The width of a typical coccus.

17. The resolving power of the unaided eye.

18.

The resolving power of the scanning electron 

microscope.

19.

The resolving power of the transmission 

electron microscope.

20.

The resolving power of the compound light 

microscope.

21.

Anton van Leeuwenhoek is given credit for

developing the first compound light 

microscope.

A) True

B) False

A) True

B) False

22.

The wavelength of visible light limits the size

of objects that can be seen with the compound

light microscope.

A) True

B) False

A) True

B) False

23.

The resolving power of compound light

microscopes can be improved by adding

additional magnifying lenses.

24.

A brightfield microscope can be converted to 

a darkfield microscope by replacing the

condenser on a brightfield microscope with a

darkfield condenser.

25.

Transmission electron microscopes are used 

to study surface features.

A) True

B) False

A) True

B) False

26.

Primary syphilis is usually diagnosed in the

clinical microbiology laboratory by the use of

a scanning electron microscope.

27.

A magnifying glass could be considered a 

simple microscope.

A) True

B) False

28.

The total magnification achieved when the oil 

immersion lens is used is 1,000 ×.

A) True

B) False

29.

Fluorescence microscopy is often used in 

immunology laboratories.

A) True

B) False

29.

Fluorescence microscopy is often used in 

immunology laboratories.

A) True

B) False

A) True

B) False

30.

The resolving power of electron microscopes

is much better than that of compound light

microscopes because the wavelength of

electrons is much longer than that of visible

light.

31.

The approximate resolving power of the 

unaided human eye is:

A) 0.2 cm.

B) 0.2 mm.

C) 0.2 µm.

D) 0.2 nm.

32.

The approximate resolving power of the 

compound light microscope is:

A) 0.2 cm.

B) 0.2 mm.

C) 0.2 µm.

D) 0.2 nm.

33.

The reason that better resolution cannot be 

achieved with the compound light

microscopes used in the lab (i.e., the limiting

factor of the compound light microscope) is

the:

A)

“high-tech” capabilities of the company that 

we purchased them from.

B)

C)

manner in which the objective lenses were

ground.

fact that the eyepiece (ocular) magnification

is only ×10.

D) wavelength of visible light.

34.

The total magnification achieved in the 

A) 40×.

B) 100×.

C) 400×.

D) 1,000×.

laboratory when using the high-power (highdry)

objective

of the

compound

light

microscope

is:

35.

The total magnification achieved in the 

A) 40×.

B) 100×.

C) 400×.

D) 1,000×.

laboratory when using the oil immersion

objective of the compound light microscope

is:

36.

Which one of the following statements is not 

true?

A)

The scanning electron microscope is used to

examine the surfaces of various objects and

its resolving power is approximately 20 nm.

B)

The transmission electron microscope is used

to examine very thin sections of various

specimens and its resolving power is

approximately 1,000 times better than the

resolving power of the unaided human eye.

C) 0.5 mm = 500 µm = 500,000 nm.

D)

Better resolution can be achieved using 

transmission electron microscopes than can be

achieved using scanning electron

microscopes.

37.

The unit of measure usually used to describe 

bacterial size is:

A) millimeters.

B) micrometers.

C) nanometers.

D) angstroms.

37.

The unit of measure usually used to describe 

bacterial size is:

A) millimeters.

B) micrometers.

C) nanometers.

D) angstroms.

Answer Key

1. D

2. B

3. A

4. D

5. D

6. B

7. A

8. D

9. B

10. B

11. c

12. c

13. c

14. b

15. d

16. d

17. e

18. b

19. a

20. c

21. B

22. A

23. B