Myco

Question 1

The major features by which molds are routinely categorized are:

Answer 1

Macroscopic growth characteristics and microscopic morphology

Question 2

A sputum specimen found from a patient with a known klebsiella pneumonia

Answer 2

Include media that have cyclohexamide

Question 3

Many fungal infections are transmitted a man via inhalation

Answer 3

Histoplasma capsulatum

Question 4

Using a fluorescent microscope

Answer 4

Calcofluor white

Question 5

Formation of germ tubes

Answer 5

Candida albicans

Question 6

An HIV -positive patient begins to show of meningitis

Answer 6

Cryptococcus neoformans

Question 7

Caffeic acid media inoculated

Answer 7

Cryptococcus neoformans

Question 8

The one characteristic by which an unknown cryptococcus species can be identified as cryptococcus neoformans is:

Answer 8

Positive phenol oxidase test

Question 9

A urine culture from a patient with a urinary tract infection “failure to produce germ tubes”

Answer 9

Candida glabrata

Question 10

The recovery of some molds and yeast

Answer 10

Cycloheximide

Question 11

A neonatal blood culture collected through a catheter grows a small yeast.

Answer 11

Malassezia furfur

Question 12

Which medium could a technologist use to verify that a yeast isolate from a blood culture is pure?

Answer 12

Chrome agar ( chromagenic agar)

Question 13

The morphological characteristic of a yeast grown in rabbit plasma are shown the in the image.

Answer 13

Candida albicans

Question 14

The most sensitive test for the initial diagnosis of cryptococcal disease is:

Answer 14

Cryptococcal antigen

Question 15

Which of the ff. Procedures is recommended to confirm that an unknown mold is one of the pathogenic dimorphic fungi?

Answer 15

Molecular testing

Question 16

Laboratory workers should always work under a biological safety hood when working with cultures of:

Answer 16

Coccidoides immitis

Question 17

Structures important in the microscopic identification of coccidoides immitis are:

Answer 17

Irregular staining, barrel-shaped arthrospores

Question 18

Which of the following is the most useful morphological feature in identifying the mycelia phase of histoplasma capsulatum?

Answer 18

8 - 14 um tuberculate macroconidia

Question 19

A mold growing at 25C exhibits delicate, septate, hyaline hyphae and many more conidiophores extending at right angles

Answer 19

Sporothrix schenckii

Question 20

Which of the following is a dimorphic fungus?

Answer 20

Blastomyces dermatitis

Question 21

Examination of a fungal culture from a bronchial washing reveals white, cottony aerial mycelium

Answer 21

MALDI-TOF mass spectrometry

Question 22

The mold shown in the image is isolated from a bone marrow culture of a patient who travelled to southeast Asia

Answer 22

Talaromyces marneffei (formerly penicillium)

Question 23

The microscopic structures that are most useful in the identification of dermatophytes are:

Answer 23

Macroconidia and microconidia

Question 24

The correct identification of dermatophyte seen in this image ISI

Answer 24

Epidermophyton floccosum

Question 25

Culture of a strand of hair

Answer 25

Microsporum andouinii

Question 26

On day 3 of fungal culture “cotton candy”

Answer 26

Zygomycete

Question 27

Talaromyces (formerly penicillium ) species be can separated from aspergillus fumatigus by:

Answer 27

Lack of vesicle

Question 28

A fungus superficially resembles talaromyces (formerly penicillium) species but may be differentiated because its phialides are long and tapering and bend away

Answer 28

Paecilomyces

Question 29

An isolate from a cornea infection had the gram stain shown in the image

Answer 29

Fusarium

Question 30

In the USA, a most common cause of eumycotic mycetoma is:

Answer 30

Psendallascheria boydii

Question 31

Crust from a cauliflower -like lesion the on hand

Answer 31

Fonsecaea pedrosoi

Question 32

Which of the following scenarios presents the greatest risk for coccidiodomycosis?

Answer 32

Central Valley California migrant worker

Question 33

Which of the ff. Is the most helpful in distinguishing the morphology of yeast?

Answer 33

Cornmeal agar with Tween 80

Question 34

The most likely identification of the mold shown in the images is (may dalamang plate sa pic )

Answer 34

Aspergillus fumatigus

Question 35

“Birds on a wire”

Answer 35

Trichophyton rubrum

Question 36

Which fungal organism is crease (+) and phenol oxidase (+)?

Answer 36

Cryptococcus neoformans

Question 37

A mold grows on SAB agar in 2 days, with “salt and pepper” colonies

Answer 37

Rhizopus

Question 38

A dematiceous mold grew in 4 days on sabouraud agar, isolated from a foot wound.

Answer 38

Alternaria

Question 39

This fungus is encapsulated and produces by budding.

Answer 39

Cryptococcus gattii