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Step 1 USMLE - Micro > Micro classification facts > Flashcards

Micro classification facts Flashcards

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USMLE® Step 1 flashcards
1
Q

Bacteria that make biofilms

A

Pseudomonas S. aureus S.epidermidis

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2
Q

lipoteichoic acids

A

G+ bact

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3
Q

pili

A

most G- bact

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4
Q

Pathogens with Capsules

A

S pneumo, K. pneumoniae, H.influ, Pseudomonas, Neisseria meningitidis, Salmonella, Cryptococcus

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5
Q

Which bacteria has a poly d glutamate capsule?

A

Bacillus anthracis

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6
Q

Which bacteria has a K1 capsule?

A

E coli meningeal strains

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7
Q

Which bacteria has a hyaluronic acid capsule

A

S. pyogenes

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8
Q

M protein - bact and function

A

Group A strep - antiphagocytic, will stop complement activation by destroying C3 convertase, therefore dec opsonization with C3b

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9
Q

Protein A - bacteria and function

A

S. aureus - binds Fc of IgG, inhibits phagocytosis

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10
Q

Bact with Coagulase

A

S. aureus, Y. pestis

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11
Q

Bacteria with collagenase

A

Clostridium perfringens, Prevotella melaninogenica

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12
Q

Bacteria with heparinase

A

Bacteroides, Prevotella

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13
Q

Bacteria with IgA protease

A

Heamophilus, Neisseria, S. pneumo

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14
Q

Bacteria with lecithinase

A

Clostridium perfringens

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15
Q

Pathogens with catalase, concern with what disease

A

Staph, Nocardia, Enterobacteriaceae, Aspergillus, Listeria, Candida, Pseudomonas

Chronic Granulomatous Disease

Mnemonic: Staph “N” Enterobacteriacease Are Listed Catalase Positive

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16
Q

Pathogens with Urease, increases chance of what disease, treatment of that disease

A

Proteus, Ureaplasma, Nocardia, Cryptococcus, Helicobacter

Kidney stones - struvite stones (Mg, NH3, PO4)
Rx - acidify urine –> lithotripsy

Mnemonic: Punch

17
Q

Pathogen with axial filaments

A

Spirochetes

18
Q

Pathogen with Pseudopodia

A

Entamoeba histolytica

19
Q

Spore forming bacteria

A

Clostridia, Bacillus

20
Q

Obligate aerobes

A

Mycobacterium, Nocardia, Pseudomonas, Cornyebacterium, Bacillus

Mnemonic: My Nasal Passages Can Breathe

21
Q

Microaerophiles

A

Borrelia, Campylobacter (gull wings), Helicobacter

22
Q

Obligate Anaerobes

A

Actinomyces, Clostridium, Bacteroides (Fusobaterium, Prevotella)

Step 1 USMLE - Micro (6 decks)

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