BOC Microbiology Fungi Exam Questions
With Correct Answers A+
The major features by which molds are routinely identified are: - Answer✔Macroscopic
characteristics and microscopic morphology
A sputum specimen from a patient with a known Klebsiella pneumoniae infection is received in
the laboratory for fungus culture. The proper procedure for handling this specimen is to: -
Answer✔Include media that have cyclohexamide and chloramphenicol added to inhibit bacterila
organisms and saprophytic fungi.
Many fungal infections are transmitted to man via inhalation of infectious structures. Which of
the following is usually contracted in this manner? - Answer✔Histoplasma capsulatum
A smear of skin tissue reveals fluorescent septate hyphae. The smear was prepared using: -
Answer✔Calcofluor white
An organism that demonstrates budding yeast cells with wide capsules in an India ink
preparation of spinal fluid is probably: - Answer✔Cryptococcus neoformans
The formation of germ tubes presumptively identifies: - Answer✔Candida albicans.
An HIV positive patient bean to show signs of meningitis. A spinal fluid was collected and
cultured for bacteria and fungus. A budding, encapsulated yeast was recovered. Which organism
is consistent with this information ? - Answer✔Cryptococcus neoformans
Gram stain examination of a CSF specimen indicates the presence of yeast-like cells with gram
positive granular inclusions. Which of the following techniques should be used next to assist in
the identification of this organism? - Answer✔India Ink
The recovery of some Cryptococcus species may be compormised if the isolation media
contains: - Answer✔Cycloheximide
The most sensitive test for the initial diagnosis of cryptococcal disease is: -
Answer✔Cryptococcal antigen
Which of the following statements concerning the germ tube test is true? - Answer✔Candida
alabicans and Candida tropicalis can be used as positive and negative controls, respectively.
Which of the following procedures should be performed to confirm that an unknown mold is one
of the pathogenic dimorphic fungi: - Answer✔Culture conversion to yeast form