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
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