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Botany > BACTE LEC - Strep > Flashcards

BACTE LEC - Strep Flashcards

1
Q

morphology of strep

A

cocci in chains or pairs

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2
Q

metabolism of strep

A

lactic acid fermentation

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3
Q

normal habitat of strep

A

throat, upper RT

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4
Q

catalase rxn

A

-

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5
Q

growth of strep more pronounced on which agar

A

enriched agar [blood agar]

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6
Q

appearance of colonies

A

pinpoint, transparent colonies

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7
Q

strep requires increased ___for growth

A

CO2

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8
Q

pigment of serrati

A

prodigiosin [red]

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9
Q

pigment of aeruginosa

A

thiocyanin [blue green]

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10
Q

classif based on physiologic characteristics

pus producing

A

pyogenic

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11
Q

type of hemolysis of pyogenic strep

A

beta

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12
Q

type of hemolysis of viridans

A

alpha or non

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13
Q

type of hemolysis of lactic acid –

A

non-hemolytic/gamma

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14
Q

classif based on physiologic characteristics

elevation of wbc

A

pyogenic

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15
Q

classif based on physiologic characteristics

opportunistic patho

A

viridans

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16
Q

not part of lancefield group

A

viridans

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17
Q

classif based on physiologic characteristics

non hemolytic, dairy products, Lancefield group N

A

Lactic acid

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18
Q

classif based on physiologic characteristics
flora of intestine
resistant to vancomycin

A

enterococci

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19
Q

strep Grp A susceptible to

A

Bacitracin

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20
Q

group a and group b RESISTANT TO

A

Sulfomethoxazole and Trimethoprim (SXT)

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21
Q

for accuracy of group a identification

A

Sulfomethoxazole and Trimethoprim (SXT)

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22
Q

resistant to bacitracin and sxt

A

s agalactiae

23
Q

group a strep classified accdg to

A

cell wall structure

24
Q

pathogenic determinants of group a strep

A

M protein
Antiphagocytic substance/enzyme
adherence to mucosal cells

25
Q

two hemolysin

A

SLO and SLS

26
Q

prevents phagocytosis, adheres to cell wall

A

M protein

27
Q

type of hemolysin

oxygen labile

A

slo

28
Q

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

A

slo

29
Q

type of hemolysin

-oxygen stable

A

SLS

30
Q

type of hemolysin

  • hemolysis around colony [aerobic]
  • non-antigenic
A

SLS

31
Q

type of hemolysin

-lyses leukocytes

A

SLS

32
Q

causes scarlet fever/rash

A

erythrogenic toxin

33
Q

spreading factor

A

hyaluronidase

34
Q

redness of skin

A

erythema

35
Q

fibrinolytic

utilized as treatment for blood clot

A

streptokinase

36
Q

clinical infections
also called strep throat
abrupt onset

A

bacterial pharyngitis and tonsilitis

37
Q

clinical infections

ast very predictable

A

bacterial pharyngitis and tonsilitis

38
Q

clinical infections

s/s: sore throat, malaise, fever, headache, nausea, vomiting, abdominal pain

A

bacterial pharyngitis and tonsilitis

39
Q

clinical infections

s/s: tonsils and pharynx inflamed

A

bacterial pharyngitis and tonsilitis

40
Q

clinical infections

s/s: cervival lymph nodes: swollen and tender

A

bacterial pharyngitis and tonsilitis

41
Q

clinical infections

s/s: weeping lesions

A

pyodermal infection/impetigo

42
Q

onset of pyodermal infection

A

2-5 years

43
Q

onset of bacterial pharyngitis and tonsilitis

A

abrupt

44
Q

easily treated infection

A

pyodermal infection/impetigo

45
Q

MOT for bacterial pharyngitis and tonsilitis

A

droplets and close contact

46
Q

caused by erythrogenic toxin

A

scarlet fever

47
Q

s/s: desquamation, strawberry tongue, tongue yellow white w/ red

A

scarlet fever

48
Q

susceptibility test for scarlet fever

A

dick’s test

49
Q

test: erythrogenic toxin is injected

A

dick’s

50
Q

+ test for dick’s t

A

redness and swelling

51
Q

implication of + test in dick’s test

A

susceptible to scarlet fever, no Ab yet

52
Q

diagnostic test for scarlet fever

A

schultz-charlton reaction

53
Q

test:antierythrogenic toxin is injected

A

schultz-charlton reaction

54
Q

result of schultz-charlton reaction

A

rash will blanch then fade

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