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Microbiology > Aerobic gram positive bacteria > Flashcards

Aerobic gram positive bacteria Flashcards

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Biology 101 flashcards
1
Q

Staphylococci and Micrococci

A 
S. aureus
S. epidermidis
S. saprophyticus
S. lugdunensis
micrococcus
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2
Q

Streptococcaceae

A 
S. pyogenes (group A)
S. dysgalactiae
S. agalctiae (group B)
Group D Strep
Viridians Strep
S. pneumoniae
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3
Q

Microorganisms similar to strep

A 
E. faecalis
E. faecium
Gemella
Leuconostoc
abiotrophia
granulicatella
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4
Q

micrococcaceae characteristics

A

clustered cocci
catalase +
facultative anaerobes
salt tolerant

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5
Q

What causes nosocomial pneumonia, blood infections and endocarditis?

A

Staph aureus

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6
Q

What are waste products of bacterial metabolism that cause disease?

A

Toxins

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7
Q

example of toxinosis

A

toxic shock syndrome
scalded skin syndrome
food poisoning

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8
Q

what are exotoxins?

A

toxins from gram positive cells secreted out of the cell

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9
Q

what are endotoxins?

A

toxins from gram negative bacteria made from lipids that come from inside the cell.

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10
Q

How does staph aureus hemolyze the blood agar plate

A

by hemolysins

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11
Q

what test will ID Staph aureus?

A

coagulase

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12
Q

what is gram positive cocci, catalase pos, coagulase neg?

A

CNS coagulase negative staph

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13
Q

what enzyme destroys the penicillin molecule?

A

penicillinase

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14
Q

what chemical structure is penicillin built on?

A

the beta lactam ring

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15
Q

what is another name for the enzyme penicillinase?

A

beta lactamase

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16
Q

what are the chemically protected penicillins not susceptible to beta lactamase?

A

methicillin, oxacillin and nafcillin

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17
Q

What is MRSA

A

Methicillin resistant staph aureus

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18
Q

what is the antibiotic for MRSA?

A

vancomycin

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19
Q

what is VISA?

A

Vancomycin intermediate Staph aureus

20
Q

Staph aureus chemical reactions?

A

ferment mannitol
dnase positive
of dextrose positive
novobiocin sensitive

21
Q

What causes UTI in sexually active women and older men with indwelling catheters?

A

S. Saprophyticus

22
Q

S. saprophyticus chemical reactions?

A 
coagulase neg
dnase neg
mannitol neg/weak
novobiocin resistant
of-dextrose positive
23
Q

What does Staph Epi cause?

A

endocarditis
bacteremia
UTI
wound infections

24
Q

Staph epidermidis chemical reactions?

A

coagulase neg
dnase neg
mannitol neg
novobiocin sensitive

25
Q

Which Micrococcaceae are pathogens in blood?

A

Micrococcus
S. epi
Stomatococcus mucilanginosus

26
Q

S. saprophyticus is a pathogen in ______

A

Urine

27
Q

what test separates micrococcaceae from Streptococcus?

A

Catalase

28
Q

What is a gram positive cocci in chains?

A

Streptococcus

29
Q

what gram positive coccus are catalse negative?

A

streptococcus and enterococcus

30
Q

what is partial hemolysis and turns the blood agar green or brown?

A

alpha

31
Q

what classification causes complete hemolysis?

A

Beta

32
Q

what classification has no hemolysis?

A

gamma

33
Q

what is the zone of alpha hemolysis close to the coloney surrounded by a wide zone of beta?

A

alpha prime

34
Q

what bacteria causes alpha prime hemolysis?

A

viridians

35
Q

where does group A beta hemolytic strep inhabit?

A

respiratory tract

36
Q

what species of gram + cocci is group A strep?

A

Strep pyogenes

37
Q

what is the #1 pathogen in the throat?

A

S. pyogenes

38
Q

What causes scarlet fever?

A

S. pyogenes

39
Q

what causes necrotizing fasciitis?

A

S. pyogenes

40
Q

what causes toxic strep syndrome?

A

S. pyogenes

41
Q

Which group causes pneumonia?

A

group A (pyogenes)

42
Q

what is a condition that is a consequence of a previous disease of injury?

A

sequelae

43
Q

what is inflammatory disease that can develop as a complication of inadequately treated strep throat or scarlet fever?

A

rheumatic fever

44
Q

what is post streptococcal glomerulonephritis?

A

patients make antibodies to streptococcal membranes and antibodies form immune complexes on the glomerular basement membrane

45
Q

what are the conditions that cause streptococcal sequelae?

A

glomerulonephritis

rheumatic fever

Microbiology (6 decks)

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