micro

Question 1

bacterial meningitis

Answer 1

l. monocytogenes. and streptococcus spp

Question 2

test to differentiate L monytogenes and Streptococcus

Answer 2

hanging-drop motility (25C)
catalase

Question 3

motile between S. agalactiae and L monocytogenes

positive in Catalase

Answer 3

L. monocytogenes

L. monocytogenes

Question 4

l. monocytogenes motility

Answer 4

tumbling motility

Question 5

all cocci are ___________ in motility

Answer 5

negative

Question 6

L. monocytogenes morphology in Sulfide Indole Motility (SIM)

Answer 6

umbrella morphology

Question 7

inverted chrismas tree/test tube brush morphology

Answer 7

erysipelothrix

Question 8

specimen: sputum
which tests of incubation on lowenstein jensen agar are consistent with mycobacterium tubercolosis

Answer 8

niacin: +
nitrate reduction: +
photocromogenic: -

Question 9

mycobacterium tubercolosis morphology

Answer 9

cauli flower

Question 10

MacConkey agar with swarming colonies (colorless) on blood agar

Answer 10

*proteus

Question 11

PAD + (phenylalanine deaminase)

Answer 11

Proteus
providencia
morganella

PD PPMo

Question 12

what test differentitates Proteus from providencia and morganella

Answer 12

Urease

Question 13

kanamycin= R
Vancomycin= R
Colistin = R
growth on 20% bile plate= +

Answer 13

Bacteroides fragilis group

Question 14

anaerobic, nonpigmented, gram negative rods
kanamycin= sensitive
vancomycin = R
colistin = sensitive
indole +
nitrate -
catalase -

Answer 14

fusobacterium nucleatum

Question 15

thin bacilli with pointed ends

Answer 15

fusiform

Question 16

anaerobic gram pos, spore forming bacili,
grows on the cfa plate
“ground glass” colnies
fluoresce chartreuse (yellow green)
kanamycin = sensitive
vancomycin = sensitive

Answer 16

clostridium difficile

Question 17

indole +
catalase +
anaerobic gram pos diphtheroids
GLC (gas liquid chromatographi) = propionic acid

Answer 17

propionicbacterium acnes

Question 18

anaerobic gram pos bacilli
with subtermian spores were recovered from several blood culutres
diagnosed with a malignancy of the colon

Answer 18

clostridium septicum

Question 19

anaerobic fram neg bacili
recovered from fluid obtained from drainage of a postsurgical abdominal wound

kanamycin = R
vancomycin = R
Colistin = R
indole neg
urease neg
pigment neg
nitrate neg
lipase neg
growth on 20%bile plate = +

Answer 19

bacteroides fragilis group

Question 20

fusobacterium nucleatum
and bacteroides fragilis

kanamycin =
colistin =
vancomycin =
20% bile agar =

Answer 20

bacteroides
kanamycin = R
colistin = R
vancomycin= R
20% bile agar = (+)

fusobacterium nucleatum
kanamycin = S
colistin = S
vancomycin= R
20% bile agar = (-)

Question 21

white patches on the babys tongue and in his mouth
oral rash

Answer 21

candida ablicans

Question 22

test for candida ablicans

Answer 22

germ tube
cornmeal agar (harsh chemicals)
- presence of chlamydospores

Question 23

69 year old male patient
cigarette smoker
fungal culture
hyphae= septate with dichotomous branching
spores= produced by coidial heads with numerous conidia
colony= velvety or powdery at first
turniong dark greenish to gray

Answer 23

Aspergillus

Question 24

aspergillus mode of transmission

Answer 24

inhalation

Question 25

virulence factor that is produced by aspergillus

Answer 25

AFLA toxin

Question 26

aspergillus if infected what color is the pleural fluid

Answer 26

black

Question 27

gram neg rods on MacConkey agar pink to dark pink oxidase neg colonies

Answer 27

klebsiella pneumoniae

Question 28

what indicates pink in macConkey agar

Answer 28

lactose fermenter

Question 29

serratia marcescens triple enzyme +

Answer 29

DNase lipase gelatinase

Question 30

safety pins appearance

Answer 30

yersinia pestis

Question 31

vibrio cholerae medium

Answer 31

TCBS agar