Addtl Readings Flashcards

1
Q

All of the following are beta hemolytic on BAP except?
A. S. agalactiae
B. S. pyogenes
C. S. pneumoniae
D. None of these

A

C. S. pneumoniae

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2
Q

Pigment production is an inherent characteristic of a specific
organism, choose the incorrect pair between species and pigment
A. C. violaceum - violet
B. S. rubideae - brick red
C. Kluyvera spp. - blue
D. None of these

A

D. None of these

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3
Q

Bacterial species that develops colonies with an old sock odor on
Mannitol Salt agar would most likely be

A

S. aureus

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4
Q

Surface scum at the sides of thioglycolate may be produced by which
of the following species?

A

Pseudomonas

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5
Q

Small “fuzzy edge” umbonate center colony on chocolate agar may
be produced by which of the following species?

A

Eikenella

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6
Q

Colonies on visual examination on SBA are described as “medusa
heads”, this may be indicative of which of the following species?

A

B. anthracis

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7
Q

Which of the following media can be used for primary plating and
subculturing of fastidious organism like haemophilus and neisseria?

A

CAP

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8
Q

Antibiotics in Modified Thayer Martin
1. Vancomycin 2. Nystatin 3. Trimetophrim 4. Amphotericin B

A

1 and 3

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9
Q

For primary plating of fungi, which of the following media can be
used?

A

SBA

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10
Q

Alpha hemolysis results in
A. A partial lysis on of RBCs in SBA
B. Green discoloration of the medium
C. Both a and b
D. None of these

A

C. Both a and b

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11
Q

A moderate growth of heaped, dry appearing white colony is isolated
from a patient with thrush. The colony has tiny projections extending out
along the edge outfits margin.

A

Candida albicans

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12
Q

“Bull’s eye” appearing colonies on SBA may likely be
A. S pneumoniae
B. S pyogenes
C. S agalactiae
D. none of these

A

C. S agalactiae

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13
Q

The fermentable carbohydrate in MacConkey agar
A. Sucrose
B. Lactose
C. Salicin
D. Glucose

A

B. Lactose

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14
Q

which is not a component of Hektoen Agar?
A. Sucrose
B. Lactose
C. Salicin
D. Glucose

A

D. Glucose

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15
Q

TSI and KIA are biochemical test media used to detect fermentation.
What carbohydrate is absent in KIA?
A. Glucose
B. Sucrose
C. Lactose
D. None of these

A

B. Sucrose

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16
Q

pH indicator incorporated in TSI is
A. Neutral red
B. Bromthymol blue
C. Phenol red
D. None of these

A

C. Phenol red

17
Q

A negative decarboxylase test using moeller’s broth is indicated by ___ color
A. Purple
B. burgundy/red
C. Yellow
D. Green
E. None of these

A

C. Yellow

18
Q

Which of the following biochemical tests can be helpful in the initial
differentiation of proteus, providencia, and morganella from other
enterobacteriaceae?
A. Citrate utilization test B. Decarboxylase test
C. Dnase test
D. Deaminase test

A

D. Deaminase test

19
Q

Indicator for citrate

A

bromothymol blue

20
Q

Following the addition of 10% ferric chloride, a green discoloration is
noted in phenylalanine agar. This must be reported as:

A

Positive

21
Q

Which of the following is not classified as an automated system for
microbial identification?

A

API

22
Q

Test that aids in identification of anaerobes:

A

Spot Indole

23
Q

Presumptively identify gram + cocci that are catalase

A

LAP test

24
Q

Identify group A streptococci and likewise differentiate enterococcus
and group D streptococci

A

PYR

25
Q

Presumptive identification of S. pneumoniae from sputum, blood and
CSF

A

Bile solubility

26
Q

In Christensen’s, Urea Agar may contain which of the following pH
indicators? Use choices in #66
A. Neutral Red
B. Bromthymol Blue
C. Phenol Red
D. None of these

A

C. Phenol Red

27
Q

KOVAC/s reagent is added to media following incubation to detect

A

Production of indole

28
Q

Development of red color is reported as a positive result in all of the
following tests except:
A. PYR
B. LAP test
C. ONPG
D. None of these

A

C. ONPG

29
Q

Addition of ninhydrin reagent

A

Rapid Hippurate Hydrolysis

30
Q

Positive result of malonate and citrate test

A

increased alkaline pH