WHOLE LESSON: IDENTIFYING BACTERIA Flashcards

1
Q
  • gram + cocci/ resimble grapes 1 dm
  • facultative anaerobes, oxidase - , catalase +
A

staphylococcal species

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2
Q

staphy grow on?

A

non-enriched media

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3
Q

staphylococcal is ?

A

non-motile & non spore forming

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4
Q

staphy is a commensal on:

A

skin & mucous membranes

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5
Q

staphy is stable in?

A

environment

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6
Q

what is the colonial characteristcs of staphy:

A

-white opaque 4mm dm
-bovine & human strain: golden yellow
-cogaulase negative: pigmented

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7
Q

-gram+ , for chains & 1.0 dm
-catalase -, facultative anaerobes, non-motile

A

Staphylococcus species

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8
Q

colonies of staphylococcus are:

A
  1. small
  2. haemolytic
  3. translucent
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9
Q

pathogenic strains of staphy is:

A
  1. thick capsules
  2. produce mucoid colonies
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10
Q

where is the usual habitat of staphy?

A
  1. upper respiratory
  2. lower urogenital tract
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11
Q

staphy is suspectible to?

A

dessication

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12
Q
  • gram+ bacteria w/ many branching filaments
    -slow growth on laboratory media
    -an opportunistic pathogen producing diverse inflammatory response
A

Genus actinobacteria

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13
Q

genus actinobacteria can be:

A
  1. anaerobic
  2. facultative anaerobic
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14
Q

genus actinobacteria is:

A

nonspore-forming & non-motile

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15
Q

actinobacteria is modifed by?

A

Ziehl-neelsen-negative

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16
Q

actino b. can colonize?

A

mucous membrane of animals

17
Q

actino require?

A

enriched growth media for growth

18
Q

this structure are part of the host response to this chronic infection

A

Club-shaped structure

19
Q

-gram+
- aerobic & non-motile
-spores is from aerial filaments
-spoil saprophytes
- long, slender, branching filament w/ tendency to fragment into rods & cocci in smears

A

Nocardia species

20
Q

growth of nocardia species is on:

A

Sabouraud dextrose agar

21
Q

nocradia species modified _______ due to mycolic acid in cell wall

A

Ziehl-Neelsen-Positive

22
Q
  • gram+, filamentous & branching
    -motile coccal zoospores about 1.5 dm
    -aerobic & capnophilic
A

dermatophilus congolensis

23
Q

d. congolensis has no growth on?

A

Sabouraud dextrose agar

24
Q

d. congolensis can be found in:

A

foci on skin of carrier animals

25
______ is associated w/ equine nocardiform placentits, leading to loss of the foal in approx. 50% of cases
Crossiella equi.
26
- Gram-positive, pleomorphic bacteria - Fastidious, requiring enriched media - Occur singly, in palisades of parallel cells and in angular clusters resembling Chinese characters in stained smears. - commensals on mucous membranes - Cause pyogenic infection - non-motile facultative anaerobes - catalase+, oxidase negative -  usual habitat: mucous
: Corynebacterium species
27
- named Corynebacterium equi - Gram+ rods or cocci, - aerobic, soil saprophyte, worldwide distrib. - Non-motile, catalase +, oxidase - & weakly acid-fast - oxidation-fermentation test & in sugar fermentation tests negative - CAMP-test positive - Respiratory pathogen of foal (under 6 m
Rhodococcus equi
28
Rhodococcus equi together with Nocardia sp and Mycobacterium sp they form?
Actinomyce
29
- Most are small, Gram-positive, coccobacillary rods, up to 2 μm in length - Catalase +, oxidase-, motile, facultative anaerobic - Environmental saprophytes - Grow on non-enriched media - Tolerate wide temperature & and pH ranges - Tumbling motility at 25°C - Aesculin hydrolysed
Listeria species
30
is a microbiological test used to identify the presence of hemolytic activity, particularly in the identification of certain bacteria. The test is named after the researchers who developed it.
CAMP test, or Christie-Atkins-Munch-Peterson test,
31
- gram+, small rods (smooth forms) or filaments (rough form) -growth on non-enriched media -complete haemolysis in 48 hours - catalase- & coagulase + -Non-motile, oxidase -, facultative anaerobe - H2S formed along stab line in triple sugar iron agar - found in porcine tonsils
Erysipelothrix rhusiopathiae
32
-Large, Gram-positive rods (but few are Gram-negative) - Endospores produced - Aerobes or facultative anaerobes - Growth on non-enriched media - Most species motile, catalase-positive and oxidase-negative - Majority are non-pathogenic environmental organisms - Bacillus anthracis (non-motile) causes anthrax - Bacillus licheniformis is implicated in sporadic abortions in cattle and sheep - Usual habitat: environment
Bacillus species
33
 Large, Gram-positive rods  Endospores produced Anaerobic,  catalase-negative and oxidase- negative  Motile (except C. perfringens)  Enriched media required for growth  Colonies of C. perfringens surrounded by zones of double haemolysis  Present in soil, in alimentary tracts
clostridium species
34