BACTE LEC - Strep Flashcards Preview

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Flashcards in BACTE LEC - Strep Deck (54)
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1

morphology of strep

cocci in chains or pairs

2

metabolism of strep

lactic acid fermentation

3

normal habitat of strep

throat, upper RT

4

catalase rxn

-

5

growth of strep more pronounced on which agar

enriched agar [blood agar]

6

appearance of colonies

pinpoint, transparent colonies

7

strep requires increased ___for growth

CO2

8

pigment of serrati

prodigiosin [red]

9

pigment of aeruginosa

thiocyanin [blue green]

10

classif based on physiologic characteristics
pus producing

pyogenic

11

type of hemolysis of pyogenic strep

beta

12

type of hemolysis of viridans

alpha or non

13

type of hemolysis of lactic acid --

non-hemolytic/gamma

14

classif based on physiologic characteristics
elevation of wbc

pyogenic

15

classif based on physiologic characteristics
opportunistic patho

viridans

16

not part of lancefield group

viridans

17

classif based on physiologic characteristics
non hemolytic, dairy products, Lancefield group N

Lactic acid

18

classif based on physiologic characteristics
flora of intestine
resistant to vancomycin

enterococci

19

strep Grp A susceptible to

Bacitracin

20

group a and group b RESISTANT TO

Sulfomethoxazole and Trimethoprim (SXT)

21

for accuracy of group a identification

Sulfomethoxazole and Trimethoprim (SXT)

22

resistant to bacitracin and sxt

s agalactiae

23

group a strep classified accdg to

cell wall structure

24

pathogenic determinants of group a strep

M protein
Antiphagocytic substance/enzyme
adherence to mucosal cells

25

two hemolysin

SLO and SLS

26

prevents phagocytosis, adheres to cell wall

M protein

27

type of hemolysin
oxygen labile

slo

28

type of hemolysin
active on reduced form [anaerobic]
-highly antigenic

slo

29

type of hemolysin
-oxygen stable

SLS

30

type of hemolysin
-hemolysis around colony [aerobic]
-non-antigenic

SLS

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