B2.6 STREPTOCOCCUS-LIKE ORGANISMS

Question 1

STREPTOCOCCUS-LIKE ORGANISMS

Answer 1

Aerococcus,
Gemella,
Lactococcus,
Leuconostoc, and
Pediococcus

Question 2

Aerococcus, Gemella, Lactococcus, Leuconostoc, and Pediococcus resemble what streptococci

Answer 2

viridans streptococci

Question 3

infections similar to enterococci and streptococci

Answer 3

STREPTOCOCCUS-LIKE ORGANISMS

Question 4

STREPTOCOCCUS-LIKE ORGANISMS that are resistant to vancomycin

Answer 4

Leuconostoc and Pediococcus

Question 5

STREPTOCOCCUS-LIKE ORGANISMS that are susceptible to vancomycin

Answer 5

Aerococcus

Question 6

common airborne bacteria
resemble viridans streptococci on culture but
microscopically similar to staphylococci (tetrads or clusters)
growth in 6.5% NaCl; weak catalase or pseudocatalase

Answer 6

Aerococcus

Question 7

Aerococcus viridans characteristics

Answer 7

bacteremia and endocarditis; bile esculin(+) and PYR(+)

Question 8

Aerococcus urinae characteristics

Answer 8

UTI, endocarditis, lymphadenitis, and peritonitis; bile esculin(-) and PYR(-)

Question 9

similar colony morphology and habitat to viridans streptococci
α-hemolytic or nonhemolytic, gram-negative cocci in pairs, tetrads, clusters, or short chains
endocarditis, wounds, and abscesses

Answer 9

Gemella

Question 10

Gemella speciese

Answer 10

Gemella haemolysins

Question 11

Gram(+) cocci occur singly, in pairs, or in chains and physiologically similar to enterococci
α-hemolytic or nonhemolytic
previously classified as group N streptococci
UTI and endocarditis
Does not produce acid from carbohydrates

Answer 11

Lactococcus

Question 12

Similar biochemical characteristics with enterococci and viridans streptococci
found on plant surfaces and vegetables, and in milk products
meningitis, bacteremia, UTIs, and pulmonary infections

Answer 12

Leuconostoc

Question 13

Leuconostoc Species

Answer 13

Leuconostoc citreum,
Leuconostoc cremoris,
Leuconostoc dextranicum,
Leuconostoc lactis,
Leuconostoc mesenteroides, and
Leuconostoc pseudomesenteroides

Question 14

Leuconostoc Microscopy

Answer 14

Irregular coccoid

Question 15

Biochemical Test used for Leuconostoc

Answer 15

(-) catalase ,
(-) PYR, and (-) LAP ;
(+) Bile Esculin;

growth 6.5% NaCl; and production of gas from glucose

Question 16

Gram(+) cocci in pairs, tetrads, and clusters that can grow at 45° C
bacteremia, abscess formation, and meningitis

Answer 16

Pediococcus

Question 17

Pediococcus Species

Answer 17

Pediococcus acidilactici,
Pediococcus damnosus,
Pediococcus dextrinicus,
Pediococcus parvulus, and
Pediococcus pentasaceus

Question 18

Pediococcus Biochemical Test:

Answer 18

(+) bile esculin,
(+) LAP, and (-) PYR,

do not produce gas from
glucose, some grow in 6.5% NaCl

Question 19

 sepsis, meningitis, bacteremia, and UTIs
α-hemolytic, PYR(+), LAP(-), and vancomycin
susceptible

Answer 19

Globicatella sanguinis

Question 20

wound infections

Answer 20

Helcococcus kunzii

Question 21

 otitis media in children
nonhemolytic but α-hemolysis after prolonged incubation
PYR- and LAP-(+); grow slowly in 6.5% NaCl

Answer 21

Alloiococcus otitidis