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bacteriology > gram positive > Flashcards

gram positive Flashcards

1
Q

fastidious bacteria which require addition of blood or serum on culture media

A

streptococci

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2
Q

facultative anaerobes, catalase-negative, and susceptible to dessication

A

streptococci

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3
Q

type of hemolysis where it produces a narrow zone of incomplete/partial hemolysis indicated by greenish or hazy zones around colonies

A

alpha

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4
Q

type of hemolysis where it produces wide, clear zones of complete hemolysis.

A

beta

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5
Q

most pathigenic types of hemolysis

A

beta

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6
Q

could not be placed in 1 of 6 categories

A

SIS

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7
Q

usually beta-hemolytic and pathogenic

A

pyogenic

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8
Q

usually alpha. opportunistic

A

oral

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9
Q

alpha or non hemolytic cocci found in milk, probably non-pathogenic

A

lactic

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10
Q

opportunistic, nonhemolytic cocci of the intestinal and respiratory tracts

A

anaerobic

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11
Q

degrades dna, liquefy vicous inflammatory exudate

A

dnases

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12
Q

it lysis fibrin

A

streptokinase

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13
Q

attachment to host epithelial cells

A

fimbriae

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14
Q

hydrolases NAD of respiratory enzumes killing phagocytes

A

NADses

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15
Q

attachment and colonization in mucosal surfaces

A

lipotechoic acid

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16
Q

causes lysis of RBCs and platelets

A

peptidoglycan

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17
Q

serologic typing based on C-carbohydrates(cell wall polysaccharides)

A

lancefield grouping

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18
Q

strangles is caused by

A

streptococcus equi

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19
Q

it is a highly contagious disease in horses that involves the upper respiratory tract with abscessation of regional lymph nodes

A

strangles

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20
Q

it shows high fever, depression, and anorexia followed by oculonasal discharge that becomes purulent

A

strangles

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21
Q

submandibular nodes are affected and guttural pouch empyema is a common finding

A

strangles

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22
Q

prevention and control of strangles

A

antibiotic, vaccination, drainage of abscesses, cleanliness, disinfection of animal environment and equipment, careful nursing of affected animals

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23
Q

isolation of strangles

A

routine media, selective blood agar, and mcConkey agar

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24
Q

a diverse group of gram positive that colonizes mucous membrane of mammals but some are found in the skin

A

actinomycetales

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25
Q

they are usually required enriched media for cultivation

A

actinomycetales

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26
Q

arcanobacterium pyogenes is changed to

A

trueperella pyogenes

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27
Q

actinomyces suis is changed to

A

actinobaculum suis

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28
Q

major characteristics in the classification of bacteria

A

morphological
chemical component
cultural
antigenic
genetics
pathogenicity
metabolic/biochemical
ecological

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29
Q

ultimate tool for identification of bacteria

A

genetic make up

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30
Q

majority of these are facultative anaerobes and grows on non-enriched memdia

A

staphylococcus

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31
Q

colonies of these is growing onblood agar, and they are non-motile, catalase positive and do not form spores

A

staphylococcus

32
Q

diagnosis of strangles

A

specimen
colonial appearance
direct microscopu

33
Q

what distinguishes the group A streptococci from other hemolytic streptococci

A

its susceptibility to a 0.04 unit disc of bacitracin

34
Q

what is the lancefield grouping and type of hemolysis of strepto suis

A

D and alpha

35
Q

consequences of infection of strepto suis

A

septicemia, meningitis, arthritis

36
Q

usual habitat of strepto susi

A

tonsils and nasal cavity

37
Q

strepto agalactiae consequences of action and usual habitat

A

chronic mastitis in cattle, sheep and in milk ducts

38
Q

strepto agalactiae lancefield and hemolysis

A

B beta

39
Q

atmospheric growth requirements of actinomyces and its usual habitat and site of lesions

A

facultative anaerobic, capnophile, anaerobic and in nasopharyngeal and oral mucosae

40
Q

atmospheric growth requirements of actinobacterium and its usual habitat and site of lesions

A

facultative anaeroboc and capnophilic, in nasopharyngeal mucosa of cattle, sheep and pigs

41
Q

atmospheric growth requirements of actinobaculum and its usual habitat and site of lesions

A

anaerobic in prepuce and preputial diverticulum of boars

42
Q

atmospheric growth requirements of dermatophilus and its usual habitat and site of lesions

A

aerobic and capnophilic in skin of carrier animals, scabs from lesions

42
Q

atmospheric growth requirements of nocardia species and its usual habitat and site of lesions

A

aerobic, soil

43
Q

what causes abscessation, mastitis, suppurative pneumonia, endometritis, pyometra, arthritis, and umbilical infections in cattle, sheep and pigs

A

arcanobacterium pyogenes

44
Q

agent that causes arthritis, pleuritis, cutaeneous and visceral abscessation, peritonitis in dogs

A

actinomyces hordeovulneris

45
Q

virulence factor of actinomyces pyogenes

A

exotoxin that lyse RBCs, proteases

46
Q

virulence factor of actinomyces viscosus

A

surface fibril that may serve as adhesins for host cells or other bacteria (coaggregation)

47
Q

it causes clinical syndromes in dogs indistinguishable from that initiated by nocardia

A

a. viscosus

48
Q

2 syndromes initiated by nocardia asteroides and a. viscosus

A
  1. localized granulomatous lesions involving the skin and subcutis
  2. pyothorax with granulomas
49
Q

specimens of genus actinocetales

A

specimens like pus, exudates, aspirates, tissue and scrapings from wall of abscess and sections of granulomas in 10% formalin for histopath

50
Q

have a characteristic of a molar tooth colonies and Gram pos filamentous microscopic morphology

A

actinomyces spp

51
Q

invasion of the mandible, less commonly in maxilla, causes chronic osteomyelitis referred to as

A

lumpy jaw

52
Q

trauma to mucosa from rough feed or through dental alveoli during tooth eruption

A

lumpy jaw

53
Q

majority of these are facultative anerobes and grow on non-enriched media, non motile and catalase positive. they do not form spores and are stable in environment

A

staphylococcus

54
Q

this shields staphylococci form phagocytic cells

A

fibrin deposition

55
Q

what virulent factor ables staphylococci to convert fibrinogen to fibrin

A

coagulase

56
Q

enzymes which contribute to virulence in staphylo

A

lipase, esterases, elastase, staphylokinase

57
Q

surface component which binds Fc portion of IgG and inhibits opsonization

A

protein a

58
Q

cytolytic destruction of phagocytes of some animal species

A

leukocidin

59
Q

the major toxin in gangrenous mastitis. causes spasm of smooth muscle and is necrotizing and potentially lethal

A

alpha toxin(alpha hemolysin)

60
Q

a sphingomyelinase which damages cell membranes

A

beta toxin

61
Q

responsible for desquamation in staphylococcal scalded skin syndrome in humans

A

exfoliative toxins

62
Q

heat stable toxins asscoated with staphylococcal food poisoning in humans

A

enterotoxins

63
Q

clinical conditions of staphyloccus aureus in cattle

A

mastitis or udder impetigo

64
Q

.The predominant pattern of staphylococcal infections is

A

supporation and abscess formation

65
Q

it causes mastitis and dermatitis in goats

A

staohylococcus aureus

66
Q

causes bumblefoot, omphalitis in chicks and arthritis and septiccemia in turkeys

A

staphylococcus aureus

67
Q

botryomycosis of the spermatic cord

A

scirrhous cord

68
Q

causes scirrhous cord in horses

A

staphylococcus aureus

69
Q

what clinical condition is given by staphylococcus intermedius to dogs

A

pyoderma, endometritis, cystitis, otitis externa,

70
Q

greasy pig disease is caused by bacteria

A

staphylococcus hyicus

71
Q

botryomycosis of mammary gland in pigs is caused by

A

staphylococcus aureus

72
Q

mastitis, tick pyaemia, benign folliculitis, dermatitis in sheep is caused by

A

staphylococcus aureus

73
Q

streptococci canis lancefield and haemolysis

A

g beta

74
Q

causes neonatal septicemia, suppurative conditions, toxic shock syndrome in carnivores

A

streptococcus canis

75
Q

usually proliferates in the buccal cavity, or vagina of cattle and causes acute mastitis

A

streptococcus dysgalactiae

76
Q

causes abortion in cattle

A

actinomyces viscosus

bacteriology (8 decks)

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