Enterococi-general Flashcards

1
Q

ce fel de bacterii sunt

A

bacili gram -

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2
Q

de ce boli sunt repsonsabile

A

infectii urinare si bacteriemii

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3
Q

caractere generale enterobacterii

A

bacili gram -
dimensiuni moderate
aerobi facultataivi anaerobi
nu formeaza spori
ag comun-miez polizaharidic
imobili cu capsula : Klebsiella, Yersinia
imobili fara capsula : Shigella
mobili cu cili peritrihi : E.coli, Proteus, Salmonella
fermenteaza glucoza
catalazo +
oxidazo -
fermenteaza lactoza : E.coli, Klebsiella,
nu fermenteaza lactoza: Proteus, Salmonella

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4
Q

descriere mediu selectiv

A

are :
o baza nutritiva : peptone
un sistem indicator : ind de ph, unul sau mai multe zaharuri
sistem presor : cu rol inhibitor

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5
Q

exemplu de mediu selectivo-diferential `

A

AABTL

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6
Q

care este corespondenta dintre bact lactozo si patogenitate

A

bact cond patogene -bact lactozo +

bact strict patogene-bact lactozo -

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7
Q

cum se face clasficiarea serologica pentru enterobacterii

A

antigen somatic O
antigen capsular K
antigen flagelar H

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8
Q

care antigene sunt termostabile si termolabile

A

antigen somatic O -termostabil
antigen capsular K - termolabil
antigen flagelar H - termolabil

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9
Q

endotoxina / lipidul A

A

se elib dupa distrugerea bacteriei

activeaza complementul => febra => leucocitoza => trombocitopenie => CID => soc => moarte

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10
Q

ce rol are capsula

A

rol antifagocitar

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11
Q

descriere pili

A

sunt de 2 tipuri :

  • comuni => fav aderenta, colonizarea si multiplicarea de la niv mucoaselor
  • sexuali => transfer de material genetic
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12
Q

Care este rolul pentru componentii competitivi pentru Fe chelatori

A

pentru crestere si multiplicare bacteriana

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13
Q

Care este rolul plasmidelor

A

rexistenta la antibiotice

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