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Step 1 USMLE - Micro > Micro classification facts II > Flashcards

Micro classification facts II Flashcards

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USMLE® Step 1 flashcards
1
Q

Gram negative cocci

A

Neisseria

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2
Q

Catalase positive bact (cocci)

A

Staphylococci

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3
Q

Coagulase positive bact

A

Staph aureus

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4
Q

Coagulase negative, catalase positive

A

S. epidermidis, S. saprophytics

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5
Q

Bact Novobiocin Sensitive v Resist

A

Sens - S. epidermidis

Resist - S. saprophyticus

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6
Q

Naked DNA virus, ss

A

Parvo B19 - Note all DNA viruses are ds, except Parvo

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7
Q

Naked ds linear DNA virus

A

Adeno virus

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8
Q

Naked ds circular DNA virus

A

Papilloma viridae (HPV), Polyoma viridae (JC, BK virus)

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9
Q

DNA virus family with envelope, linear DNA

A

Herpes Viridae, Pox viridae

All DNA viruses with envelopes are icosahedral and replicate in nucleus, except Pos

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10
Q

Naked ds RNA virus families

A

Reo Virus (Colti virus, CO tick fever), Rota virus (#1 cause of fatal diarrhea in children)

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11
Q

Naked ss+ linear RNA virus families

A

Picorna (Polio, Echo, Rhino, Coxsackie, HAV)
Hepeviridae (Hep A)
Caliciviridae (Noro/Norwalk virus)

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12
Q

ss- helical enveloped linear RNA virus families

A

Orthomyxo - Influenza
Paramyxo - Parainfluenza, RSV, Measles, Mumps
Rhabdo - Rabies (only one with bullet shape)
Filo - Ebola, Marburg (both hemorrhagic fevers)

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13
Q

ss- circular enveloped helical RNA virus families

A

Arena - LCMV, Lassa fever
Bunya - Sandly fever, Hanta, California encephalitis
Delta - HDV

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14
Q

ss+ icosahedral envelope linear RNA virus families

A

Flavi - HCV, Yellow fever, Dengue, St Louis encephalitis, W Nile, Zika
Toga - Rubella, Eee, Wee
Retro - HTLV, HIV

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15
Q

ss+ helical enveloped linear RNA virus family

A

Coronaviridae - common cold, Sars

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16
Q

Bacteria - Alpha hemolytic - partial hemolysis

A

S. Pneumo, Viridans

17
Q

Bacteria - Beta hemolytic (cocci) - complete hemolysis

A

Group A Strep (S. pyogenes)

Group B Strep (S. agalaticae)

18
Q

Bacteria - gamma hemolytic - no hemolysis

A

E. faecalis, S. bovis

19
Q

Optochin sens v resistant

A

Sens - S. Pneumo

Resist - Viridans group

20
Q

Bacitracin sens v resistant

A

Sens - S. pyogenes

Resist - S. agalaticae

21
Q

Growth in 6.5% NaCl - pos v neg

A

Pos - E. faecalis

Neg - S. bovis

Step 1 USMLE - Micro (6 decks)

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