MODULE 2 Flashcards
Observation of the motility of
microorganisms on their living state is best
done through____
a) A and B
b) Hanging drop method
c) Staining of flagella
d) Wet mount preparation
d) Wet mount preparation
Bacterial specimens are most effectively
examined under what objective?
a. LPO
b. Scanner
c. OIO
d. HPO
c. OIO
What option matches the description of
bacteria shown below?
Select the correct response
a. Gram-negative cocci in tetrads
b. Gram-negative coccobacilli in chain
c. Gram-negative cocci in pairs
d. Gram-negative coccobacilli in pairs
c. Gram-negative cocci in pairs
Which of the following components does
NOT belong to Gram negative cell walls?
a. Porins
b. Thick murein layer
c. Lipopolysaccharides
d. Outer membrane
b. Thick murein layer
Which of the following procedures and
principles in the use of the microscope is
INCORRECT?
a. Scanner objective should always be used first in
order to definitively examine bacterial size
b. The coarse adjustment knob is applicable for use
until the LPO for viewing specimen carefully
c. The oil immersion should be removed from the
OIO after every use to prevent dust accumulation
d. Only the fine adjustment knob should be used
when viewing under HPO to view specimen clearly
c. The oil immersion should be removed from the
OIO after every use to prevent dust accumulation
Which procedure observes proper handling
of the microscope?
a. Removing of dust prior to cleaning lenses with
lens paper.
b. Supporting the microscope at the base and stage
when carrying.
c. Locking the HPO into position when storing the
microscope after use
d. A and B
d. A and B
A contributor to a bacterium’s virulence
includes:
a. Plasmids
b. Slime layer
c. Fimbriae
d. A and B
e. A and C
f. All of the above
e. A and C
A virulence factor made up of
polysaccharides and is found in the outermost
layer of the cell is the ______?
a. Flagellum
b. Fimbriae
c. Plasmid
d. Glycocalyx
d. Glycocalyx
All of the following types of microscopy can
view specimens in their living state EXCEPT?
a. Scanned Probe
b. Darkfield
c. Brightfield
d. Phase Contrast
c. Brightfield
Which of the following term is
INCORRECTLY defined?
a. Peptidoglycan-subcomponent for maintaining cell
shape
b. Outer membrane-site for cell respiration and
synthesis
c. Periplasm-site for detoxification of some
antimicrobials
d. inner membrane-an additional osmotic barrier of
the cell
a. Peptidoglycan-subcomponent for maintaining cell
shape
Which option matches the description of
bacteria shown below?
Select the correct response
a. Gram-positive bacilli in palisades
b. Gram-negative bacilli in pairs
c. Gram-positive bacilli in chain
d. Gram-negative bacilli in chain
d. Gram-negative bacilli in chain
Which of the following accurately
describes the importance of cell appendages?
a. The fimbriae for bacterial adhesion to host
cells aids in bacterial virulence
b. The flagellum is important in survival; by
attracting components of the immune system
c. The plasmid is significant in acquiring
effective antimicrobial susceptibility
d. The porins in Gram-positive cells helps
neutralize toxic chemicals absorbed by the cell
a. The fimbriae for bacterial adhesion to host
cells aids in bacterial virulence
This is a microscope that uses the
differences in refractive indices to view the
specimens?
a. Phase contrast
b. Scanned probe
c. Darkfield
d. Fluorescence
a. Phase contrast
Which option matches the description of
bacteria shown below? violet with cocci
Select the correct response
a. Gram-positive cocci in chain
b. Gram-positive cocci in palisades
c. Gram-positive coccobacilli in chain
d. Gram-positive bacilli in chain
a. Gram-positive cocci in chain
Which of the following is a component of
peptidoglycan?
Select the correct response
a. N-acetylmuramic acid
b. N-acetylgalactosamine
c. Polymerized NAM units
d. Hexapeptide cross-link
b. N-acetylgalactosamine
