Purple and gold book Micro Exa Questions
And Answers
Bacteroides fragilis -
correct answer ✅Which gram negative anaerobe is Vancomycin
(R), Kanamycin (R), Colistin (R), indole (v), Lipase (=), Esculin (+),
H2S (=), Catalase (+) and has black colonies on BBE?
Bacteroides ureolyticus -
correct answer ✅Which gram negative anaerobe is Vancomycin
(R), Kanamycin (S), Colistin (S), Indole (=), Lipase (=), Esculin (=), H2S
(=), Urease (+) and pits agar?
Fusobacterium nucleatum -
correct answer ✅Which gram negative anaerobe is Vancomycin
(R), Kanamycin (S), Colistin (S), Indole (+), Lipase (=), Esculin (=), H2S
(=) and has thin, fusiform rods, and speckled colonies?
Fusobacterium necrophorum -
correct answer ✅Which gram negative anaerobe is Vancomycin
(R), Kanamycin (S), Colistin (S), Indole (+), Lipase (+), Esculin (=), H2S
(+), and rods are variable in length and width?
Fusobacterium mortiferum -
correct answer ✅Which gram negative anaerobe is Vancomycin
,Purple and gold book Micro Exa Questions
And Answers
(R), Kanamycin (S), Colistin (S), Indole (V), Lipase (=), Esculin (+), H2S
(+), and has highly pleomorphic rods?
Clostridium difficile -
correct answer ✅Which gram positive anaerobe cause
Pseudomembranous Colitis (PMC), usually ID awith
immunodiagnostic tests; Emerging resistant strains; CCFA agar
("Horse Stable" odor); and is a spore former?
Clostridium perfringens -
correct answer ✅Which gram positive anaerobe has a double zone
of Hemolysis; Lecitinase positive; Gas Gangrene; and spores seldom
observed?
Clostridium tetani -
correct answer ✅Which gram positive anaerobe has terminal
spores (raquet-shaped); Tetanus?
Actinomyces israelii -
correct answer ✅Which gram positive anaerobe has "Molar tooth"
colonies; branching gram positive rods ("Lumpy Jaw"); Sulfur
granules?
, Purple and gold book Micro Exa Questions
And Answers
P. anerobius -
correct answer ✅Which gram positive anaerobe is sensitive to
SPS?
Treponema Pallidum -
correct answer ✅Which organism is a spiochete that stain with
silver impregnation, Darkfield-slow motility and flexion, No growth
on artifical media, sensitive to penicillin, tetracyclin, erythromycin
and is detected through serological tests?
Syphilis -
correct answer ✅Primary lesion- 2-10 weeks after infections,
chancre appears, heals without treatment in 3-8 weeks; may
perform darkfield or direct FA on fluid. Secondary lesion-
Dissemination (skin rash), and Latent stage- 2-20 years later, affects
skin, bone, joints and CNS?
Leptospira -
correct answer ✅Spiral with hooked ends, Animal pathogen
passed to human via water contaminated with animal urine (ex:
sewer workers, farmers, vets), Positive darkfield or direct FA. Can
grow in Fletchers semi-solid media incubate 6 weeks at 30 degrees
And Answers
Bacteroides fragilis -
correct answer ✅Which gram negative anaerobe is Vancomycin
(R), Kanamycin (R), Colistin (R), indole (v), Lipase (=), Esculin (+),
H2S (=), Catalase (+) and has black colonies on BBE?
Bacteroides ureolyticus -
correct answer ✅Which gram negative anaerobe is Vancomycin
(R), Kanamycin (S), Colistin (S), Indole (=), Lipase (=), Esculin (=), H2S
(=), Urease (+) and pits agar?
Fusobacterium nucleatum -
correct answer ✅Which gram negative anaerobe is Vancomycin
(R), Kanamycin (S), Colistin (S), Indole (+), Lipase (=), Esculin (=), H2S
(=) and has thin, fusiform rods, and speckled colonies?
Fusobacterium necrophorum -
correct answer ✅Which gram negative anaerobe is Vancomycin
(R), Kanamycin (S), Colistin (S), Indole (+), Lipase (+), Esculin (=), H2S
(+), and rods are variable in length and width?
Fusobacterium mortiferum -
correct answer ✅Which gram negative anaerobe is Vancomycin
,Purple and gold book Micro Exa Questions
And Answers
(R), Kanamycin (S), Colistin (S), Indole (V), Lipase (=), Esculin (+), H2S
(+), and has highly pleomorphic rods?
Clostridium difficile -
correct answer ✅Which gram positive anaerobe cause
Pseudomembranous Colitis (PMC), usually ID awith
immunodiagnostic tests; Emerging resistant strains; CCFA agar
("Horse Stable" odor); and is a spore former?
Clostridium perfringens -
correct answer ✅Which gram positive anaerobe has a double zone
of Hemolysis; Lecitinase positive; Gas Gangrene; and spores seldom
observed?
Clostridium tetani -
correct answer ✅Which gram positive anaerobe has terminal
spores (raquet-shaped); Tetanus?
Actinomyces israelii -
correct answer ✅Which gram positive anaerobe has "Molar tooth"
colonies; branching gram positive rods ("Lumpy Jaw"); Sulfur
granules?
, Purple and gold book Micro Exa Questions
And Answers
P. anerobius -
correct answer ✅Which gram positive anaerobe is sensitive to
SPS?
Treponema Pallidum -
correct answer ✅Which organism is a spiochete that stain with
silver impregnation, Darkfield-slow motility and flexion, No growth
on artifical media, sensitive to penicillin, tetracyclin, erythromycin
and is detected through serological tests?
Syphilis -
correct answer ✅Primary lesion- 2-10 weeks after infections,
chancre appears, heals without treatment in 3-8 weeks; may
perform darkfield or direct FA on fluid. Secondary lesion-
Dissemination (skin rash), and Latent stage- 2-20 years later, affects
skin, bone, joints and CNS?
Leptospira -
correct answer ✅Spiral with hooked ends, Animal pathogen
passed to human via water contaminated with animal urine (ex:
sewer workers, farmers, vets), Positive darkfield or direct FA. Can
grow in Fletchers semi-solid media incubate 6 weeks at 30 degrees
