Ciulla: Mycology Exam Questions with Verified Solutions
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1. 1. A bulldozer operator became ill while working on a new highway in the
San Joaquin Valley. He developed chest pain, anorexia, headache and general
malaise, and myalgia with fever. Chest X-ray showed pneumonic infiltrate and
a single, well-defined nodule in the left lower lobe. His leukocyte count and
sedimentation rate were slightly elevated. Although no fungus was seen in
direct examination of a sputum specimen, processing included a culture on
Sabouraud dextrose agar with chloram- phenicol and cycloheximide. Within
3 days at30°C,this culture produced moist, grayish growth, and white aerial
mycelia began to develop (see Color Plate 30B). A lactophenol cotton blue wet
mount of this organismisseeninColorPlate31•. Whatis the most likely identifi-
cation of this fungus?
A. Asperigillus fumigatus
B. Blastomyces dermatitidis
C. Coccidioides immitis
D. Histoplasma capsulatum: C. Coccidioides immitis
2. 2. A 38-year-old male from Ohio presented to his physician with a mild in-
fluenzalike illness that included headache and malaise. His chest X-ray showed
no infiltrates. His past medical history was unremarkable. He had no history of
travel but reported recently cleaning the bell tower at his church, which was
littered with bird excrement. The most likely agent causing his disease is
A. Aspergillus fumigatus
B. Coccidioides immitis
C. Candida albicans
D. Histoplasma capsulatum: D. Histoplasma capsulatum
3. 3. . A 44-year-old gardener pricked herself with a rose thorn. A subcutaneous
fungal infection characterized by the develop- ment of necrotic ulcers followed
this direct inoculation of fungal spores into the skin. The causative fungus was
cultured as a small yeast form at 35°C (see Color Plate 32 •) and as a mould at
room temperature with delicate hyphae and conidia. This disease is
, Ciulla: Mycology Exam Questions with Verified Solutions
Study online at https://quizlet.com/_i2tu79
A. Blastomycosis
B. Chromomycosis
C. Mycetoma
D. Sporotrichosis: D. Sporotrichosis
4. 4. A yeastlike fungus was isolated from
a sputum sample. No hyphae were produced on cornmeal agar with Tween
80. The isolate was negative for nitrate assimilation and positive for inositol
assimilation and produced urease at 37°C. These findings are typical of
A. Candida krusei
B. Cryptococcus terreus
C. Cryptococcus neoformans
D. Trichospown beigelii: C. Cryptococcus neoformans
5. 5. A 24-year-old Vietnamese refugee was seen at a clinic in Houston. His chief
complaints were weight loss and fever.
A complete blood count confirmed he was suffering from anemia as well.
Multiple skin lesions were present on his arms, some of them draining pus.
Gram stain
of the pus revealed what appeared to be yeastlike cells. A culture of the pus
grew a green mould at 22°C, which produced a red soluble pigment (see Color
Plate 33«). A lactophenol cotton blue wet mount of this organism is seen in
Color Plate 34«. The causative agent in this case is
A. Aspergillus fumigatus
B. Fusariumsp.
C. Trichoderma sp.
D. Penicillium marneffei: D. Penicillium marneffei
6. 6. A section of a lymph node stained with the Gomori silver and hematoxylin
and eosin stains is shown in Color Plate 35 •. A lactophenol cotton blue wet
mount of
a mould that grew from this specimen
is shown in Color Plate 36 •. Large, one- celled, smooth to tuberculate macro-
Study online at https://quizlet.com/_i2tu79
1. 1. A bulldozer operator became ill while working on a new highway in the
San Joaquin Valley. He developed chest pain, anorexia, headache and general
malaise, and myalgia with fever. Chest X-ray showed pneumonic infiltrate and
a single, well-defined nodule in the left lower lobe. His leukocyte count and
sedimentation rate were slightly elevated. Although no fungus was seen in
direct examination of a sputum specimen, processing included a culture on
Sabouraud dextrose agar with chloram- phenicol and cycloheximide. Within
3 days at30°C,this culture produced moist, grayish growth, and white aerial
mycelia began to develop (see Color Plate 30B). A lactophenol cotton blue wet
mount of this organismisseeninColorPlate31•. Whatis the most likely identifi-
cation of this fungus?
A. Asperigillus fumigatus
B. Blastomyces dermatitidis
C. Coccidioides immitis
D. Histoplasma capsulatum: C. Coccidioides immitis
2. 2. A 38-year-old male from Ohio presented to his physician with a mild in-
fluenzalike illness that included headache and malaise. His chest X-ray showed
no infiltrates. His past medical history was unremarkable. He had no history of
travel but reported recently cleaning the bell tower at his church, which was
littered with bird excrement. The most likely agent causing his disease is
A. Aspergillus fumigatus
B. Coccidioides immitis
C. Candida albicans
D. Histoplasma capsulatum: D. Histoplasma capsulatum
3. 3. . A 44-year-old gardener pricked herself with a rose thorn. A subcutaneous
fungal infection characterized by the develop- ment of necrotic ulcers followed
this direct inoculation of fungal spores into the skin. The causative fungus was
cultured as a small yeast form at 35°C (see Color Plate 32 •) and as a mould at
room temperature with delicate hyphae and conidia. This disease is
, Ciulla: Mycology Exam Questions with Verified Solutions
Study online at https://quizlet.com/_i2tu79
A. Blastomycosis
B. Chromomycosis
C. Mycetoma
D. Sporotrichosis: D. Sporotrichosis
4. 4. A yeastlike fungus was isolated from
a sputum sample. No hyphae were produced on cornmeal agar with Tween
80. The isolate was negative for nitrate assimilation and positive for inositol
assimilation and produced urease at 37°C. These findings are typical of
A. Candida krusei
B. Cryptococcus terreus
C. Cryptococcus neoformans
D. Trichospown beigelii: C. Cryptococcus neoformans
5. 5. A 24-year-old Vietnamese refugee was seen at a clinic in Houston. His chief
complaints were weight loss and fever.
A complete blood count confirmed he was suffering from anemia as well.
Multiple skin lesions were present on his arms, some of them draining pus.
Gram stain
of the pus revealed what appeared to be yeastlike cells. A culture of the pus
grew a green mould at 22°C, which produced a red soluble pigment (see Color
Plate 33«). A lactophenol cotton blue wet mount of this organism is seen in
Color Plate 34«. The causative agent in this case is
A. Aspergillus fumigatus
B. Fusariumsp.
C. Trichoderma sp.
D. Penicillium marneffei: D. Penicillium marneffei
6. 6. A section of a lymph node stained with the Gomori silver and hematoxylin
and eosin stains is shown in Color Plate 35 •. A lactophenol cotton blue wet
mount of
a mould that grew from this specimen
is shown in Color Plate 36 •. Large, one- celled, smooth to tuberculate macro-
