Aerobic G(+) Cocci

Question 1

: “sun burn-like rash”

Answer 1

S. Aureus

Question 2

Aerobic Gram (+) cocci

Answer 2

Staphylococcus, Micrococcus
Streptococcus, Enterococcus

Question 3

Formation of fluid-filled vessicles or Bullous Impetigo seen in _______

Answer 3

S. Aureus

Also: Scalded skin syndrome or Ritter’s Disease

Question 4

S. aureus

: spreading factor
: blocks phagocytisis and complement activation

Answer 4

: Hyaluronidase
: Protein A

Question 5

Staphylococcus that grows on prosthetic devices and catheters

Answer 5

S. Epidermidis

Question 6

Agent of honeymoon cystitis (UTI)

Answer 6

S. Saphrophyticus

Question 7

: confirmatory test of Slide Coagulase test

Answer 7

Tube coagulase test

Question 8

(+) DNAse test result

Answer 8

Clearing zone

Question 9

: Old sock odor

Answer 9

S. Aureus on Mannitol Salt Agar

Question 10

Factor required for tube coagulase test

Answer 10

Coagulase reacting factor

Question 11

: Strawberry tongue, sand paper-like rash, high fever, sore throat.

Answer 11

Scarlet fever of S. pyogenes

Question 12

Sequelae of S. pyogenes

Answer 12

Rheumatic fever
Acute glomerulonephritis

Question 13

Oxygen stable hemolysin:
Oxygen labile hemolysin:

Answer 13

Streptolysin S (non-antigenic)
Streptolysin O (antigenic - Ex. ASO test)

Question 14

: invasive dse of the newborn

Answer 14

S. Agalactiae

Question 15

Rusty sputum seen in _______

Answer 15

S. Pneumoniae (bacterial pneumonia)

Question 16

Primary virulence factor of S.pneumoniae

Answer 16

C polysaccharide

Question 17

Streptococci that requires sulfhydryl compounds

Answer 17

Abiotrophia and Granulicatella

Question 18

Bile solubility (+) reaxn

Answer 18

Clearing or disintegration of colonies

Question 19

CAMP (+) reaxn

Answer 19

Arrow head-shaped hemolysis

Question 20

2 skin tests for Scarlet fever

Answer 20

Dick’s test - susceptibility
Schultz-Charlton Reaction - confirmatory

Question 21

Most common contaminant on platelet concentration

Answer 21

S. Epidermidis

Question 22

Immunodiffusion technique to detect presence of C. diptheria

Answer 22

ELEK Test

Question 23

Skin test for C. diptheriae

Answer 23

Schick test

Question 24

How to differentiate C. diptheriae, ulcerans, pseudotuberculosis

Answer 24

Urease

C. diptheriae = (-)

Question 25

Corynebacterium assoc w prosthetic heart valve

Answer 25

C. Jekeium

Question 26

Umbrella like pattern / inverted christmas tree

Answer 26

Listeria monocytogenes

Question 27

Special culture media for listeria

Answer 27

McBride Agar

Question 28

Virulence test of L. Monocytogenes

Answer 28

Anton’s test (purulent conjuctivitis)

Question 29

Test tube brush apperance @ 22C

Answer 29

Erysipelothrix rhusiopathiae

Question 30

Whale finger or seal finger

Answer 30

E. Rhusiopathiae

Question 31

Whale finger or seal finger

Answer 31

E. Rhusiopathiae

Question 32

Beaded appearance

Answer 32

Nocardia spp.

Question 33

Nocardia

CASEIN, Xanthine, Tyrosine negative

Answer 33

N. Asteroides

Question 34

Zigzag patterrn

Answer 34

Rhodococcus equi

Question 35

Lysozyme sensitive

Answer 35

Streptomyces spp.

Nocardia spp. lysozyme resistant

Question 36

Musty basement odor

Answer 36

Streptomyces spp.

Question 37

Whipple’s disease

Answer 37

Tropheryma whipplei

Question 38

Extensive hyphaein tap water agar

Answer 38

Streptomyces spp.