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Microbiology > Specific Bacteria: Key Characteristics > Flashcards

Specific Bacteria: Key Characteristics Flashcards

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Biology 101 flashcards
1
Q

Gram positive anaerobic cocci

A

Peptostreptococcus & Peptococcus–normal flora; head & neck infections and genital infections (tubo-ovarian abscess, PID etc)

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2
Q

Coagulase +, B hemolytic, DNAse positive staphylococci that can grow on mannitol salt agar (pink–> yellow)

A

S. aureas

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3
Q

CONS that is novobiocin resistant

A

S. saprophyticus ( white chalky colonies); 2nd most common cause of UTI in young females (E.coli is 1st)

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4
Q

CONS that is novobiocin sensitive

A

S. epidermidis; right sided endocarditis in intravenous drug users

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5
Q

Gram positive cocci, catalase negative

A

Streptococci spp

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6
Q

How can streptococci classified?

A

Hemolytic ability (alpha, beta, gamma) or Lancefild surface antigens (can be confirmatory test)

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7
Q

What are the beta hemolytic strep?

A

Group A Strep (pyogenes)
Group B Strep (agalactiae)
or Group C, F and G

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8
Q

What are the alpha hemolytic strep?

A

S. pneumo or viridans streptococci (includes S. mitis group, S.anginosus group, S. mutans group and S. salivarus group)

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9
Q

What are the gamma hemolytic strep?

A
  • S. bovis (AKA Group D strep; can also be alpha hemolytic)

- Enterococci

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10
Q

Beta hemolytic strep, A-disk sensitivity, PYR+

A 
Strep pyogenes (Group A Strep)
A-disk = bacitracin
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11
Q

Beta hemolytic strep, CAMP test+, hippurate hydrolysis+ (purple solution in tube with P disk?)

A

Strep agalactiae (Group B Strep)

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12
Q

Gram + strep, bile esculin +, gamma hemolytic, 6.5% NaCl tolerant, PYR hydrolysis +, LAP+

A

Enterococcus strains

some possess the Group D antigen-confusing I know

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13
Q

Gram + strep, bile esculin+, gamma hemolytic, no growth in 6.5%NaCl, PYR hydrolysis -

A 
Strep bovis (Group D Strep), can also be alpha hemolytic
-normal intestinal flora; causes septicemia & endocarditis; found in blood in patient's with colon cancer
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14
Q

alpha hemolytic strep, bile soluble, optochin (P-disk) sensitive

A

Strep pneumo

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15
Q

gram positive strep, bile esculin negative, Optochin (P disk) resistant

A

S. salivaris, S sanguis, S. mitis, S. anginosus (VIridans streptococci)

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16
Q

gram positive cocci, normal flora and cause opportunistic infections, catalase negative, vancomycin-resistant

A

Leuconostoc & Pediococcus (strep-like organisms)

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17
Q

Gram negative cocci, anaerobic

A

Veilonella

18
Q

Gram negative cocci, oxidase+, catalase+, nonmotile, kidney bean shaped diplococci

A

Neisseria spp (N. gonorrhea, N. meningitides, N. lactamica

19
Q

Gram negative cocci, oxidase+, catalase+, nonmotile, DNAse positive, kidney bean shaped diplococci, hockey puck sign

A

Moraxella catarrhalis

20
Q

Gram positive rods with diphtheroid morphology

A

Corynebacterium, Listeria and Propionibacterium

21
Q

Gram positive rods, obligate anaerobe, spore-forming

A

Clostridia spp

like anaerobic conditions like tissue

22
Q

Gram positive rods, non-anaerobic, spore-forming

A

Bacillus spp

can be out in the aerobic environment like anthrax spores

23
Q

Gram positive rod, non-spore former

A

Lactobacilli (anaerobic)

Listeria (aerobic)

24
Q

Double-zone hemolysis, lecithinase positive, stormy fermentation of milk, Reverse CAMP test

A

Clostridium perfringens

25
Q

Which Clostridia spp form neurotoxins? Which is motile?

A

C. botulinum & C tetani

Motile–>tetani

26
Q

Aerobic gram positive bacilli, spore former, non-motile

A

Bacillus anthracis (all other Bacilli are motile)

27
Q

Aerobic gram + bacilli, beta hemolytic, motile, penicillin sensitive

A 
Bacillus cereus (seriously? it's sens to penicillin?);
food poisoning assoc. w/boiled rice
28
Q

Non-spore forming gram + bacillus, beta hemolytic, tumbling (umbrella) motility at room temperature, catalase+, bile esculin+, exhibits cold enrichment

A

Listeria monocytogenes (pregnant women at risk for granulomatosis infantisepticum)

29
Q

musty basement odor, dry and chalky colonies

A

Nocadia

30
Q

Metachromatic granules with methylene blue

A

Corynebacterium diphtheria

31
Q

Non-spore forming gram + bacillus, Metallic sheen on SBA agar, resistant to everything but vancomycin

A

Corynebacterium jeikeium

infections in immunocompromised pts and of prosthetic devices

32
Q

Which gram- rod causes co-infection with entamoeba, has a predilection for iron-overloaded individuals, produces H2S and is indole +

A

Edwardsiella

33
Q

Which bacteria do not ferment? (K/K)

A

Psudomonas, Eikenella, Moraxella, Campylobacter

34
Q

Which bacteria ferment glucose but not lactose? (K/A)

A

Shigella, Providencia, Yersinia, Serratia

35
Q

Which bacteria ferment glucose and also produce H2S? (K/A/H2S)

A

SPEC–> Salmonella, Proteus mirabilis, Edwardsiella, Citrobacter (some strains)

36
Q

Which bacteria are lactose fermenters? (A/A)

A

Eshericia

37
Q

Which bacteria are strong lactose fermenters? (A/A/Gas+)

A

Klebsiella and Enterobacter

38
Q

Which organisms are associated with dog bites?

A

Pasteurella multocida, Capnocytophaga canimorsus, Staph intermedius

39
Q

What family of gram negative organisms are oxidase -, glucose fermenters?

A

Enterobacetericiae:

Salmonella, Shigella, Klebsiella, E. coli, Proteus

40
Q

what are the gram negative organisms that are oxidase positive?

A

Pseudomonas, Campylobacter, Pasteurella, Vibrio, Aeromonas, Neisseria, and Brucella. One can hallucinate on PCP, a VAN driven by an OX named “Bruce.” who picks up Moraxella

41
Q

What Clostridium species causes foodborne illness and myonecrosis?
“ “psudomembranous colitis?
“ “ is associated with neoplasias such as colon, breast and hematologic malignancies?

A
  1. ) C. perfringens
  2. ) C. difficile
  3. ) C. botulinum
42
Q

Name some common anaerobes

A

Actinomyces, Clostridium, Propionibacterium, Bacteroides, Fusobacterium, Veillonella

Microbiology (5 decks)

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