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USMLE 2019 > Microbio > Flashcards

Microbio Flashcards

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USMLE® Step 1 flashcards
1
Q

Diseases caused by Streptococcus pyrogenic exotoxin (SPE)

A

Scarlet Fever
Toxic shock-like syndrome
Necrotizing fasciitis

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2
Q

s/sx of scarlet fever

A

strawberry tongue
pharyngitis
diffuse rash sparing the face

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3
Q

Treatment of E. faecium infections

A

Linezolid

Tigecycline

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4
Q

Treatment for bacillus anthracis infection

A

Fluoroquinolones

Tetracycline

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5
Q

Bacteria with gram stain limitations

A

These Microbes May Lack Real Color

Treponema
Mycobacteria
Mycoplasma
Legionella
Rickettsia
Chlamydia
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6
Q

catalase + organisms

A

CATs Need PLACESS to Belch Hairballs

Nocardia
Pseudomonas
Listeria
Aspergillus
Candida
E coli
Staph aureus
Serratia
B cepacia
H pylori
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7
Q

gram + obligate anaerobic bacilli that causes myonecrosis and hemolysis

A

clostridium perfringens

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8
Q

common causes of viral myocarditis

A

coxsackie B
adenovirus
parvovirus B 19

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9
Q

causative agent of bacillary angiomatosis

A

Bartonella henselae

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10
Q

common etiologies of acute pyelonephritis (3)

A

EEK

E coli
Enterococcus faecalis
Klebsiella

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11
Q

only gram + bacteria to produce LPS

A

listeria monocytogenes

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12
Q

lactose fermenters

A

lactose is KEE
test w/ macConKEE’S

Citrobacter
Klebsiella
E colo
Enterobacter
Serratia
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13
Q

causative agent of osteomyelitis in sickle cell patients

A

Salmonella

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14
Q

picornavirus

A

PERCH

poliovirus
echovirus
rhinovirus
coxsackie virus
hav

no envelope

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15
Q

viruses capable of genetic reassortment

A

segmented viruses

“BORA”
Bunyavirus
Orthomyxovirus
Reovirus
Arenavirus
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16
Q

causes the most significant opportunistic infection in transplant patients

A

CMV

17
Q

major virulence factor of Hib

A 
polysaccharide capsule
(PRP/ polyribosyl ribitol phosphate)
18
Q

DNA viruses

A

HHAPPPPy viruse

Hepadnavirus
Herpes virus
Adenovirus
Parvovirus
Polyoma virus
Papillomavirus
Poxvirus
19
Q

DNA viruses

A

HHAPPPPy viruse

Hepadnavirus
Herpes virus
Adenovirus
Parvovirus
Polyoma virus
Papillomavirus
Poxvirus
20
Q

bacterial genetic transformation is a feature of which bacteria (3)

A

SHiN

Strep pneumo
H influenzae b
Neisseria

21
Q

most common urea cycle disorder (x linked)

A

ornithine transcarbamylase deficiency

22
Q

obligate intracellular organisms

A

Really Cold

rickettsia
chlamydia

23
Q

facultative intracellular organisms

A

Some Nearby Bugs May Live FacultativeLY

Salmonella
Neisseria
Brucella
Mycobacteria
Legionella
Francisella
Listeria
Yersinia
24
Q

reactive arthritis is common following these infections (4)

A

GI infx:
Salmonella
Shigella
Campylobacter

GU infx:
Chlamydia

25
Q

bacterial toxins that can undergo transduction

A

ABCDE

shigA like toxin
Botulinum toxin
Cholera toxin
Diphtheria toxin
Erythrogenic toxin (Strep pyogenes)
26
Q

strain of E coli that does not ferment sorbitol

A

EHEC

27
Q

all DNA viruses are dsDNA except

A

parvovirus (ssDNA)

28
Q

all DNA viruses are linear except (3)

A

hepadnavirus
polyomavirus
papillomavirus
(circular)

29
Q

all RNA viruses are ssRNA (like mRNA) except

A

reovirus

dsdna

30
Q

all DNA viruses replicate in the nucleus except

A

poxvirus

31
Q

all RNA viruses replicate in the cytoplasm except (2)

A

retroviruses

influenza virus

32
Q

8 naked viruses

A

PAPP CPR H
(give PAPPsmear and CPR to naked HepE viruses)

Papilloma
Adeno
Polyoma
Parvo
Calici
Picorna
Reo
HepE
33
Q

only bacterium with a polypeptide capsule (contains D glutamate)

A

B anthracis

34
Q

smallest DNA virus

A

parvovirus

35
Q

classic triad of toxoplasmosis

A

choriretinitis
hydrocephalus
intracranial calcifications

USMLE 2019 (10 decks)

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