COMSAE Cramming Exam Questions
with Complete Solutions20
Most exotoxins are heat (labile/stabile) - ANSWERS-Labile
Which exotoxins are heat stabile? - ANSWERS-S. aureus and B. cerus (enterotoxin, food
poisoning, no antibiotic treatment)
Neisseria meningitis is a gram ___ _____ - ANSWERS-negative diplococci, obligate intracellular
Bacteroides fragilis is a gram _____ strict ____ and causes _____ - ANSWERS-Gram negative
strict anaerobe and causes pelvic or bowl abscess.
Tx: metronidazole or clindamycin + surgical drainage
Culture Media: Gonorrhea - ANSWERS-Thayer-Martin (chocolate)
H. influenza - ANSWERS-Chocolate
C. diphtheria - ANSWERS-Loffler's + Tellurite
Bordetella pertussis - ANSWERS-Bordet-Gengou (Potato extract)
M. tuberculosis - ANSWERS-Loweenstein-Jensen agat
Legionella - ANSWERS-Charcoal yeast extract agar
,Mycoplasma pneumoniae - ANSWERS-Eaton's agar (provides sterols)
Fungi - ANSWERS-Sabouraud's agar (contains peptides)
E. Coli - ANSWERS-EMB - eosin - methylene blue green metallic colonies
Lactose fermenting bacteria (enterobacter, klebsellia) - ANSWERS-MacConkey's (decreased pH
produces pink colonies)
Strep Pneumoniae is a gram ___, ______ shaped, _______ with a ______ - ANSWERS-Gram
positive, lancet-shaped, diplococci with a capsule
Causes adult bacterial meningitis and community acquired PNA
Secretes IgA proteases
Optochin-sensitive
Alpha hemolytic
Virulence factor - capsule
Cat scratch organism - ANSWERS-Bartonella, treat with azithro, DO NOT ASPIRATE
Cat bite organism - ANSWERS-Paseurella
Cat Poop - ANSWERS-Toxo gondii
Most common bacterial STD in US? - ANSWERS-Chlamydia
, Rose spots on belly, constipation and diarrhea, gram negative motile bacteria with FLAGELLA
and lactose non-fermenter (produces sulfide) .... what is it? - ANSWERS-Salmonella
typhoid/typhoid fever
Treat with ceftriaxone
Treat carriers with cipro or ampicillin
Resists phagocytosis via Vi polysaccharide
Rickettsia treatment for over 8yo - ANSWERS-Doxycycline
Rickettsia treatment when pregnant - ANSWERS-Chloramphenicol
Rickettsia treatment under 8 yo - ANSWERS-Amoxicillin
Rash on palm and soles which spreads to trunk, meningoencephalitis, renal failure - related to
dog tick (dermacentor) - ANSWERS-Rickettsia rickettssii (Rocky Mountain Spotted Fever)
Endemic typhus, spread by body louse, rash on trunk that spreads peripherally, maculopapular
petechiae, common in homeless - ANSWERS-Rickettsia prowazekii
Endemic typhus (murine typhus), fleas on rats, discrete rash after six days - ANSWERS-Ricketssia
typhi
Q fever, a type of rickettsia, seen in cattle farmers, severe onset fever and dry cough but NO
RASH - ANSWERS-Coxiella burnetii
Thumb print sign, drooling in child, sniffing position = - ANSWERS-epiglottis
with Complete Solutions20
Most exotoxins are heat (labile/stabile) - ANSWERS-Labile
Which exotoxins are heat stabile? - ANSWERS-S. aureus and B. cerus (enterotoxin, food
poisoning, no antibiotic treatment)
Neisseria meningitis is a gram ___ _____ - ANSWERS-negative diplococci, obligate intracellular
Bacteroides fragilis is a gram _____ strict ____ and causes _____ - ANSWERS-Gram negative
strict anaerobe and causes pelvic or bowl abscess.
Tx: metronidazole or clindamycin + surgical drainage
Culture Media: Gonorrhea - ANSWERS-Thayer-Martin (chocolate)
H. influenza - ANSWERS-Chocolate
C. diphtheria - ANSWERS-Loffler's + Tellurite
Bordetella pertussis - ANSWERS-Bordet-Gengou (Potato extract)
M. tuberculosis - ANSWERS-Loweenstein-Jensen agat
Legionella - ANSWERS-Charcoal yeast extract agar
,Mycoplasma pneumoniae - ANSWERS-Eaton's agar (provides sterols)
Fungi - ANSWERS-Sabouraud's agar (contains peptides)
E. Coli - ANSWERS-EMB - eosin - methylene blue green metallic colonies
Lactose fermenting bacteria (enterobacter, klebsellia) - ANSWERS-MacConkey's (decreased pH
produces pink colonies)
Strep Pneumoniae is a gram ___, ______ shaped, _______ with a ______ - ANSWERS-Gram
positive, lancet-shaped, diplococci with a capsule
Causes adult bacterial meningitis and community acquired PNA
Secretes IgA proteases
Optochin-sensitive
Alpha hemolytic
Virulence factor - capsule
Cat scratch organism - ANSWERS-Bartonella, treat with azithro, DO NOT ASPIRATE
Cat bite organism - ANSWERS-Paseurella
Cat Poop - ANSWERS-Toxo gondii
Most common bacterial STD in US? - ANSWERS-Chlamydia
, Rose spots on belly, constipation and diarrhea, gram negative motile bacteria with FLAGELLA
and lactose non-fermenter (produces sulfide) .... what is it? - ANSWERS-Salmonella
typhoid/typhoid fever
Treat with ceftriaxone
Treat carriers with cipro or ampicillin
Resists phagocytosis via Vi polysaccharide
Rickettsia treatment for over 8yo - ANSWERS-Doxycycline
Rickettsia treatment when pregnant - ANSWERS-Chloramphenicol
Rickettsia treatment under 8 yo - ANSWERS-Amoxicillin
Rash on palm and soles which spreads to trunk, meningoencephalitis, renal failure - related to
dog tick (dermacentor) - ANSWERS-Rickettsia rickettssii (Rocky Mountain Spotted Fever)
Endemic typhus, spread by body louse, rash on trunk that spreads peripherally, maculopapular
petechiae, common in homeless - ANSWERS-Rickettsia prowazekii
Endemic typhus (murine typhus), fleas on rats, discrete rash after six days - ANSWERS-Ricketssia
typhi
Q fever, a type of rickettsia, seen in cattle farmers, severe onset fever and dry cough but NO
RASH - ANSWERS-Coxiella burnetii
Thumb print sign, drooling in child, sniffing position = - ANSWERS-epiglottis
