ASCP MLS Parasitology-Mycology Exam 165
QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (VERIFIED
ANSWERS) ALREADY GRADED A+ 2025 NEW
UPDATE
? - CORRECT ANSWER: Blastomyces
? - CORRECT ANSWER: Mango fly
7 micrometers long with 8 things - CORRECT ANSWER: Trichinella solium
A 45-year-old hunter developed fever, myalgia, and periorbital edema. He has a history
of bear meat consumption. The most likely causative agent is: - CORRECT ANSWER:
Trichinella spiralis
A blood agar plate inoculated with sputum from a patient with diabetes mellitus grew
very few bacterial flora and a predominance of yeast. Identification?
Negative Germ tube.
Negative Arthroconidia.
Negative Chlamydospores.
Positive Pseudohyphae.
Positive Blastoconidia. - CORRECT ANSWER: Candida tropicalis
A bone marrow sample obtained from an immunocompromised patient revealed small
intracellular cells using a Wright's stain preparation. Growth on Sabouraud dextrose
agar plates of a mold phase at twenty five degrees Celsius and a yeast phase at thirty
, seven degrees Celsius designates the organism as dimorphic. The mold phase
produced thick, spherical tuberculated macroconidia. - CORRECT ANSWER:
Histoplasma capsulatum
A bone marrow specimen was obtained from an immunocompromised patient who
tested positive for HIV. The organism grew rapidly at three days showing a mold form at
twenty five degrees Celsius, displaying conidiophores with four to five terminal metulae
with each having four to six phialides. The conidia at the end of the phialides were oval
and in short chains. They appear as a fan or broom when viewing under ten times zoom
and forty times zoom. At thirty seven degrees Celsius, the yeast form grew more slowly,
showing conidia that formed hyphal elements breaking at the septa to produce oval
arthroconidia. - CORRECT ANSWER: Penicillium marneffei
A germ tube negative, pink yeast isolate was recovered from the respiratory secretions
and urine of a patient with AIDS. Identification?
Positive Blastoconidia.
Negative Arthroconidia.
Negative Pseudohyphae.
Positive Urease. - CORRECT ANSWER: Rhodotorula species
A Gram stain from a gum lesion showed what appeared to be amoebae. A trichrome
smear showed amoebae with a single nucleus and partially digested polymorphnuclear
leukocytes. The correct identification is: - CORRECT ANSWER: Entamoeba gingivalis
A helminth egg is described as having terminal
polar plugs. The most likely helminth is: - CORRECT ANSWER: Trichuris trichiura
A hyaline mold recovered from a patient with AIDS produced rose colored colonies with
lavender centers on Sabouraud dextrose agar. Microscopic examination showed
multiseptate macroconidia appearing as sickles or canoes. - CORRECT ANSWER:
Fusarium species
QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (VERIFIED
ANSWERS) ALREADY GRADED A+ 2025 NEW
UPDATE
? - CORRECT ANSWER: Blastomyces
? - CORRECT ANSWER: Mango fly
7 micrometers long with 8 things - CORRECT ANSWER: Trichinella solium
A 45-year-old hunter developed fever, myalgia, and periorbital edema. He has a history
of bear meat consumption. The most likely causative agent is: - CORRECT ANSWER:
Trichinella spiralis
A blood agar plate inoculated with sputum from a patient with diabetes mellitus grew
very few bacterial flora and a predominance of yeast. Identification?
Negative Germ tube.
Negative Arthroconidia.
Negative Chlamydospores.
Positive Pseudohyphae.
Positive Blastoconidia. - CORRECT ANSWER: Candida tropicalis
A bone marrow sample obtained from an immunocompromised patient revealed small
intracellular cells using a Wright's stain preparation. Growth on Sabouraud dextrose
agar plates of a mold phase at twenty five degrees Celsius and a yeast phase at thirty
, seven degrees Celsius designates the organism as dimorphic. The mold phase
produced thick, spherical tuberculated macroconidia. - CORRECT ANSWER:
Histoplasma capsulatum
A bone marrow specimen was obtained from an immunocompromised patient who
tested positive for HIV. The organism grew rapidly at three days showing a mold form at
twenty five degrees Celsius, displaying conidiophores with four to five terminal metulae
with each having four to six phialides. The conidia at the end of the phialides were oval
and in short chains. They appear as a fan or broom when viewing under ten times zoom
and forty times zoom. At thirty seven degrees Celsius, the yeast form grew more slowly,
showing conidia that formed hyphal elements breaking at the septa to produce oval
arthroconidia. - CORRECT ANSWER: Penicillium marneffei
A germ tube negative, pink yeast isolate was recovered from the respiratory secretions
and urine of a patient with AIDS. Identification?
Positive Blastoconidia.
Negative Arthroconidia.
Negative Pseudohyphae.
Positive Urease. - CORRECT ANSWER: Rhodotorula species
A Gram stain from a gum lesion showed what appeared to be amoebae. A trichrome
smear showed amoebae with a single nucleus and partially digested polymorphnuclear
leukocytes. The correct identification is: - CORRECT ANSWER: Entamoeba gingivalis
A helminth egg is described as having terminal
polar plugs. The most likely helminth is: - CORRECT ANSWER: Trichuris trichiura
A hyaline mold recovered from a patient with AIDS produced rose colored colonies with
lavender centers on Sabouraud dextrose agar. Microscopic examination showed
multiseptate macroconidia appearing as sickles or canoes. - CORRECT ANSWER:
Fusarium species
