MTAP: Streptococcus

Question 1

Organism classification that is based on the hemolytic pattern

Answer 1

Brown’s classification

Question 2

Organism classification that is based on cell wall polysaccharide

Answer 2

Rebecca Lancefield classification

Question 3

Hemolytic pattern of S. pyogenes

Answer 3

Beta hemolytic

Question 4

Antigen responsible for post-streptococcal sequalae caused by S. pyogenes

Answer 4

M protein

Question 5

Neurologic manifestation of acute rheumatic fever caused by S. pyogenes

Answer 5

Sydenham chorea

Question 6

R/S: Bacitracin; S. pyogenes

Answer 6

S

Question 7

Protease implicated in flesh eating streptococci

Answer 7

Exotoxin B

Question 8

Cell surface antigen of S. pyogenes that mediates epithelial cell attachment

Answer 8

Protein F

Question 9

Spreading factor of S. pyogenes

Answer 9

Hyaluronidase

Question 10

Common cause of puerperal sepsis

Answer 10

S. agalactiae

Question 11

Causes mastitis in cattles

Answer 11

S. agalactiae

Question 12

Hemolytic pattern of S. agalactiae

Answer 12

Beta hemolytic

Question 13

Group D streptococcus that is highly associated with colon cancer

Answer 13

S. bovis

Question 14

Most common cause of meningitis and otitis media

Answer 14

S. pneumoniae

Question 15

Causes subacute endocarditis and brain abscess

Answer 15

Viridans strep

Question 16

Causes strangles among horses

Answer 16

S. equi

Question 17

Cultures of this organism produce honeysuckle or butterscotch odor

Answer 17

S. anginosus

Question 18

Viridans strep that causes dental carries

Answer 18

S. mutans

Question 19

Viridans strep that causes endocarditis

Answer 19

S. salivarius

Question 20

Culture media that produces orange coloration for group B strep

Answer 20

Carrot broth

Question 21

R/S: Bacitracin; S. agalactiae

Answer 21

R

Question 22

R/S: SMZ; S. pyogenes

Answer 22

R

Question 23

R/S: SMZ; S. agalactiae

Answer 23

R

Question 24

PYR reaction of S. pyogenes

Answer 24

(+)

Question 25

PYR reaction of S. agalactiae

Answer 25

(-)

Question 26

CAMP reaction of S. pyogenes

Answer 26

(-)

Question 27

CAMP reaction of S. agalactiae

Answer 27

(+)

Question 28

Hippurate hydrolysis reaction of S. pyogenes

Answer 28

(-)

Question 29

Hippurate hydrolysis reaction of S. agalactiae

Answer 29

(+)

Question 30

Growth of Enterococci on 6.5% NaCl

Answer 30

(+)

Question 31

R/S: Taxo A; Enterococci

Answer 31

R

Question 32

PYRase reaction of Enterococci

Answer 32

(+)

Question 33

Growth of Enterococci @ 45C and 10C

Answer 33

(+)

Question 34

Which Streptococcus spp. will exhibit bile solubility?

Answer 34

S. pneumoniae

Question 35

R/S: Optochin/ Taxo P; S. pneumoniae

Answer 35

S

Question 36

R/S: Optochin/ Taxo P; Viridans strep

Answer 36

R

Question 37

Test for catalase negative Gram positive cocci

Answer 37

Leucine Aminopeptidase Test (LAP test)

Question 38

Able to grow on tellurite

Answer 38

E. faecalis

Question 39

Susceptibility test for S. pyogenes

Answer 39

Dick test

Question 40

Confirmatory test for S. pyogenes

Answer 40

Schultz Charlton

Question 41

Positive result for Dick test

Answer 41

Redness

Question 42

Positive result for Schultz Charlton

Answer 42

Blanching