Misc/Images
Identify the following species:
A: Corynebacterium spp
B. Bacillus spp
C. Listeria spp
D. E. coli
B. Bacillus spp
When setting up the CAMP test, which organism is streaked next to & acts synergistically with beta-lysin of S. aureus?
A. Strep agalactiae (GBS)
B. Strep pyogenes (GAS)
C. Staph lugdenensis
C. Staph saphrophyticus
A. Strep agalactiae (GBS)
The only organism that is coagulase tube positive.
A. Staph lugdenensis
B. Staph epidermidis
C. Staph saphrophyticus
D. Staph aureus
D. Staph aureus
They are the two morphological stages/life cycles of protozoans.
a. amoeba & trematodes
b. cestodes & trematodes
c. cyst & trophozite
d. none of the above
C. cyst and a trophozite
Candida albicans displays ___ on blood agar (BAP).
A. raised colonies
B. feet
C. chalky colonies
D. mucus
B. feet
It is the most critical step that can affect how the Gram Stain will look like.
A. The decolorizer
B. The crystal violet
C. The safarrin
D. The Gram's iodine.
The decolorizer step.
A fastidious organism that grows on chocolate and requires both factor V and X.
A. H. parainfluenzae
B. H. ducreyi
C. H. parahaemolyticus
D. H. influenzae
D. Haemophilus influenzae
E. coli is ___ positive and ___ negative.
A. Indole, oxidase
B. Oxidase, indole
C. H2S, lysine
D. PYR, indole
A. Indole, oxidase
The scotch tape method or using a paddle is done on which intestinal nematode?
A. Trichuris trichuria
B. Enterobius vermicularis
C. Fasciola hepatica
D. Schistosoma japonicum
B. Enterobius vermicularis
An organism that has a musty odor, is a long branching gram positive rod, and stains positive in the PAF stain.
A. Coccidioides
B. Nocardia
C. Mycobacterium
D. Rhodococcus
B. Nocardia
Identify this species:
A. Actinomycetes
B. Penicillium
C. Rhizopus
D. Aspergillus
D. Aspergillus
What test can you use to differentiate Corynebacteriaum spp from Listeria spp?
A. catalase
B. motility
C. Gram stain
D. indole spot test
B. motility
The presence of squamous epithelial cells in sputum specimen indicates oropharygenal contamination. If you see >__ epithelial cells at 10x, the sample will be rejected.
A. 10
B. 5
C. 1
D. 30
A. 10
Taenia saginata has __ uterine branches and Taenia solium has __ uterine branches.
A. <12, >12
B. 2, 4
C. >14, <14
D. 0, 1
C. >14, <14
This Penicillium species is the only pathogenic species.
A. P. marneffei
B. P. rubens
C. P. digitatum
D. P. glabrum
A. P. marneffei
Identify the following organism:
A. Clonorchis sinesis
B. Taenia solium
C. Hymenolepsos nana
D. Paragonomis westermanni
A. Clonorchis sinesis
A zone of inhibition of <__mm for the Novobiocin test indicates that the organism is resistant and a zone of inhibition of >=__mm indicates that the organim is susceptible.
A. 9, 15
B. 10, 17
C. 20, 28
D. 12, 16
D. 12, 16
The following species can be part of the normal flora in low numbers in the respiratory tract.
A. N. gonorrhoeae
B. M. catarrhalis
C. N. meningitidis
D. None of the above
C. N. meningitidis
Which of the following is a blood parasite?
A. Heterophyes heterophyes
B. Nectar americana
C. Loa Loa
D. Taenia saginata
C. Loa Loa
Conidia are fairly large and usually contain 4 cells, the central cell swells to give the conidia a “croissant-like” appearance with age.
A. Trichophytan
B. Malassezia
C. Scedosporium
D. Curvularia
D. Curvularia
A stain done after performing two Gram Stains on a positive blood culture and not seeing any organisms on the slides. It detects DNA from any organism.
A. Partial Acid Fast stain
B. Gram Stain
C. The AO stain.
D. Giemsa stain
C. The AO stain.
The CLS inoculated an organism into a broth tube containing a nitrogen source. He incubated the tube for 24 hours. He then added nitrate A and nitrate B. He observed for color change and noticed that it was colorless. He added zinc and the broth remained colorless. What does this mean?
A. zinc detected residual nitrate left over meaning the nitrate reaction never occurred.
B. The organism reduced nitrate to nitrite
C. The organism reduced the nitrate all the way to nitrogen gas (N2).
D. The test is invalid. The CLS has to repeat the test.
C. The organism reduced the nitrate all the way to nitrogen gas (N2).
What is the mec-A gene?
A. agents that interrupt bacterial cell-wall formation as a result of covalent binding to essential penicillin-binding proteins (PBPs), enzymes that are involved in the terminal steps of peptidoglycan cross-linking in both Gram-negative and Gram-positive bacteria.
B. encodes an additional penicillin binding protein PBP2a, which has a low affinity to all ß-lactam antibiotics and is responsible for the meticillin resistance of MRSA strains
C. used to study the macrolide lincosamide streptogramin resistance (MLSB), both constitutive and inducible as well as macrolide streptogramin resistance (MSB) in Staphylococcus aureus
B. encodes an additional penicillin binding protein PBP2a, which has a low affinity to all ß-lactam antibiotics and is responsible for the meticillin resistance of MRSA strains
Entamoeba histolytica has __ nuclei in a mature cyst and Entamoeba coli has __ or more nuclei in a mature cyst.
A. 1, 10
B. 2, 1
C. 0, 1
D. 4, 5
D. 4, 5
What groups fall within the Runyon classification?
A. Rapid fermenters, lactose fermenters, strep anginosis group
B. M. avium & M. intracellulare complex (MAIC)
C. Photochomogens, stocochromogens, non-chromogens, rapid growers
D. M. chelonae, M. haemophilum, M. ulcerans, M. marinum
C. Photochomogens, stocochromogens, non-chromogens, rapid growers