Gram Positive Cocci Flashcards Preview

Microbiology:Bacteriology > Gram Positive Cocci > Flashcards

Flashcards in Gram Positive Cocci Deck (58):
1

Arrangement of Staphylococcus

clusters

2

best sample for Staphylococcus

aspirates

3

hemolytic pattern of Staphylococcus

beta-hemolytic

4

culture media for Staphylococcus

BAP
MSA
PEA
CNA

5

units of bacitracin

0.04u

6

resistant to bacitracin

Staphylococcus

7

units of furazolidone

100ug

8

resistant to furazolidone

Micrococcus

9

positive to modified oxidase test

Micrococcus

10

resistant to lysostaphin test

Micrococcus

11

positive for furoxone-tween 80 oil red o

Micrococcus

12

positive to glycerol with erythromycin

Staphylococcus

13

positive OF test (Fermentation)

Staphylococcus

14

yellow colonies in MSA

Staphylococcus aureus

15

components of MSA

1% mannitol
7.5% NaCl
phenol red

16

other name of scalded skin syndrome

Ritter's syndrome

17

cause of toxic shock syndrome

enterotoxin F

18

best single criterion for pathogenicity in Staphylococcus

coagulase test

19

plasma used for coagulase test

rabbit plasma in EDTA

20

heat stable toxin

enterotoxin/neurotoxin
(causes vomitting, heat stable, targets T cells)

21

enterotoxin causing foodpoisoning

enterotoxin A,B,D

22

enterotoxin causing pseudomembranous enterocolitis

enterotoxin B

23

toxin causing Toxic shock syndrome

enterotoxin F

24

leukocidin

Panton-Valentine

25

action of leukocidin

targets WBCs
causes delta hemolysis

26

antiphagocytic component of cell wall of Staphylococcus

protein A

27

biochemical tests for Staphylococcus aureus

TELLURITE GLYCINE: black
VP: pos
DNASE: pos (methyl green dye)
PYR: neg

28

mode of attachment of S. epidermidis

poly-Y-DL-glutamic acid

29

novobiocin resistant Staphylococcus

Staphylococcus saprophyticus

30

Staphylococcus associated to endocarditis

Staphylococcus ludenensis

31

confers S. lugdinensis resistance to oxaillin

Mec A gene

32

tests that will differentiate coagulase positive staphylococci

PYR
VP

33

gold standard for MRSA detection

PCR
nucleic acid probes

34

Smith and Brown

hemolytic pattern

35

Lancefield

extraction of C carbohydrate

36

Academic/Bergey's

temperature

37

flesh eating bacteria

Streptococcus pyogenes

38

antiphagocytic component of S. pyogenes

M protein

39

Epithelial cell attachment for S. pyogenes

F protein

40

respiratory attachment for S. pyogenes

lipotechoic acid

41

causes rash in scarlet fever

Exotoxin B

42

Streptolysin O Characteristics

labile
subsurface
WBC, platelet, tissue cells
stab in BAP

43

Streptolysin S characteristics

stable
surface
WBC

44

Bacitracin susceptible Streptococcus

Streptococcus pyogenes

45

common cause of neonatal meningitis

S. agalactiae

46

CAMP test reaction of Streptococcus agalactiae

arrowhead hemolysis

47

5 Groups of viridans streptococci

S. mitis
S. mutans
S. salivarius
S. bovis
S. anginosus

48

most commonly isolated viridans streptococci

S. mutans

49

D antigen positive streptococci

Enterococci

50

Enterococcus faecalis

most common isolate

51

requires cyanocobalamin for growth

Enterococcus faecalis

52

cause of lobar pneumonia

Streptococcus pneumoniae

53

most common cause of bacterial meningitis in adults

Streptococcus pneumoniae

54

colonial morphology of young Streptococcus pneumoniae

dome shape

55

colonial morphology of old Streptococcus pneumoniae

coin with raised rim
donut colonies

56

nutritionally variant streptococci

Abiotrophia
Granulicatella

*they need B6, cystine, pyridoxal

57

pyridoxal producing bacteria

E. coli
Klebsiella
Enterobacter
Yeasts

58

Streptococci-like microorganisms

Aerococcus- vancomycin S
Gemella-easily decolorized
Lactococcus
Leuconostoc-cross reacts with Lancefield D
Pediococcus- grow at 45 degrees