UTIs Flashcards by Robbie Gruhl

Q

EMB culture media

A

selective for Gram - bacteria

purple/black

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Q

MacConkey culture media

A

selective for Gram - bacteria

pink Gram - colonies

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Q

Lysozyme function

A

break down peptidoglycan in bacterial cell walls

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Q

Lactoferrin

function

A

iron-binding protein: prevents Fe from getting to bacteria

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Q

Gram + cocci

cocci

catalase +

coagulase +

A

S. aureus

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Q

Gram +

cocci

catalase +

coagulase -

novobiocin resistant

A

S. saprophyticus

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Q

Gram +

cocci

catalse +

coagulase -

novobiocin-sensitive

A

S. epidermidis

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Q

E. coli

hemolysis

A

gamma-hemolysis

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Q

nitrites

vs

+ nitrites

A

nitrites: Gram +

+ nitrites: Gram -

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Q

Gram -

urease -

A

E. coli

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Q

Gram -

urease +

A

Proteus

or

Klebsiella

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Q

Gram -

indol -

A

Klebsiella

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Q

Gram -

indol +

A

E. coli

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Q

LPS pathway

A

in Gram -

LPS recognized by TLR4

NF-kB is master transcriptional regulator

IL-1 and TNF-α released

IL-1 leads to pyrexia

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