Chapter 3 Test bank Questions and Answers 100%
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Terms in this set (54)
Which of the following is D) 100 μm
NOT equal to 1 mm?
A) 0.001 m
B) 106 nm
C) 0.1 cm
D) 100 μm
E) 10-3 m
What structure does light C) specimen
pass through after leaving
the condenser in a
compound light
microscope?
A) ocular lens
B) objective lens
C) specimen
D) illuminator
,Which of the following D) basic dye - negative stain
pairs is mismatched?
A) nigrosin - negative stain
B) methylene blue -
simple stain
C) acidic dye - capsule
stain
D) basic dye - negative
stain
E) crystal violet - simple
stain
Which of the following C) 2-4-1-3
places the steps of the
Gram stain in the correct
order?
1-Alcohol-acetone
2-Crystal violet
3-Safranin
4-Iodine
A) 1-2-3-4
B) 2-1-4-3
C) 2-4-1-3
D) 4-3-2-1
E) 1-3-2-4
Which of the following C) safranin — acid dye
pairs is mismatched?
A) alcohol-acetone —
decolorizer
B) crystal violet — basic
dye
C) safranin — acid dye
D) iodine — mordant
E) carbolfuchsin — basic
dye
, Which of the following is C) If cells are acid-fast, they are gram-negative.
NOT true regarding the
acid-fast stain?
A) It is used to identify
members of the genus
Mycobacterium.
B) Acid-fast cells retain
the primary dye after
treatment with acid-
alcohol.
C) If cells are acid-fast,
they are gram-negative.
D) Acid-fast cells appear
red in a completed acid-
fast stain.
E) Non-acid-fast microbes
appear blue in a
completed acid-fast stain.
The purpose of a mordant D) prevent the crystal violet from leaving the cells.
in the Gram stain is to
A) remove the simple
stain.
B) make the bacterial cells
larger.
C) make the flagella
visible.
D) prevent the crystal
violet from leaving the
cells.
E) make gram-negative
cells visible.
Solved
Save
Terms in this set (54)
Which of the following is D) 100 μm
NOT equal to 1 mm?
A) 0.001 m
B) 106 nm
C) 0.1 cm
D) 100 μm
E) 10-3 m
What structure does light C) specimen
pass through after leaving
the condenser in a
compound light
microscope?
A) ocular lens
B) objective lens
C) specimen
D) illuminator
,Which of the following D) basic dye - negative stain
pairs is mismatched?
A) nigrosin - negative stain
B) methylene blue -
simple stain
C) acidic dye - capsule
stain
D) basic dye - negative
stain
E) crystal violet - simple
stain
Which of the following C) 2-4-1-3
places the steps of the
Gram stain in the correct
order?
1-Alcohol-acetone
2-Crystal violet
3-Safranin
4-Iodine
A) 1-2-3-4
B) 2-1-4-3
C) 2-4-1-3
D) 4-3-2-1
E) 1-3-2-4
Which of the following C) safranin — acid dye
pairs is mismatched?
A) alcohol-acetone —
decolorizer
B) crystal violet — basic
dye
C) safranin — acid dye
D) iodine — mordant
E) carbolfuchsin — basic
dye
, Which of the following is C) If cells are acid-fast, they are gram-negative.
NOT true regarding the
acid-fast stain?
A) It is used to identify
members of the genus
Mycobacterium.
B) Acid-fast cells retain
the primary dye after
treatment with acid-
alcohol.
C) If cells are acid-fast,
they are gram-negative.
D) Acid-fast cells appear
red in a completed acid-
fast stain.
E) Non-acid-fast microbes
appear blue in a
completed acid-fast stain.
The purpose of a mordant D) prevent the crystal violet from leaving the cells.
in the Gram stain is to
A) remove the simple
stain.
B) make the bacterial cells
larger.
C) make the flagella
visible.
D) prevent the crystal
violet from leaving the
cells.
E) make gram-negative
cells visible.
