Prelim Exams

Question 0

Not a normal flora and is exogenous

Answer 0

Zygomycetes

Question 1

Morphological classification of fungi that causes majority of mycoses.

Answer 1

Deuteromycota

Question 2

Aerial mycelia with terminal chlamydospores causing tinea capitis.
Fluoresces in Wood’s light.(green)

Answer 2

Mircrosporum audouinii

Question 3

Characteristic bright yellow rim with curved tips with rare microconidia. ; this causes what?

Answer 3

Microsporum canis; tinea capitis and tinea corporis

Question 4

Microconidia are absent. Clubshaped.

Answer 4

Epidermophyton floccosum

Question 5

Opportunistic mycoses causing KERATITIS AND CORNEAL ULCER.

Answer 5

Fusarium

Question 6

Parallel chains of conidia, present within the areal part of the fungus

Answer 6

Steirigmata

Question 7

Aspergillus species are differentiated in:

Colonial morphology

Answer 7

Aspergillus fumigatus - blue green
Aspergillus terreus - tan to cinnamon
Aspergillus niger- black
Aspergillus flavus- yellow green to yellow

Question 8

Fonsacea pedrosoi, distinct characteristics.

Answer 8

1-3 conidia

Very slow growing

Primary chains of conidia

With secondary and tertiary chains of conidia.

Causes Chromoblastomycosis.

Question 9

Not a predisposing factor for opportunistic mycoses.

Choices:

Answer 9

Viral infection during childhood; boosts the immune system

Question 10

Distinct characteristic of C. Albicans.

Answer 10

Germtube positive. ( no constrictions)

Question 11

A Candida species commonly causing Endocarditis.

Answer 11

Candida parasilopsis

Question 12

Sporangiophore location( different from the rest) arise between the nodes

Answer 12

A. Absidia

Question 13

Domeshaped, swollen sporangiophores.

Answer 13

Columella

Question 14

Presence of sclerotic bodies upon tissue biopsy

Answer 14

Chromoblastomycosis

Question 15

Endemic systemic mycosis present in south east asia, particularly China, harbored by bamboo rats.

Answer 15

Penicillium marneffei

Question 16

Rhodotorula

Answer 16

Urease positive and inositol negative.

Question 17

Needs an olive oil overlay

Answer 17

Malassezia furfur.

Question 18

Seen in reticuloendothelial cells. Attacking macrophages.

Answer 18

Histoplasma capsulatum

Question 19

What is common for candidiasis, cryptococcosis and sporotrichosis?

Answer 19

The all have yeast forms, blastoconidia(budding cells)

Question 20

Which of the following is a not characteristic of histoplasmosis?

➡️ Yeast phase

➡️ Mycelial phase

➡️ Endemic in a specific geographic distribution

➡️ Is an intracellular mycosis

➡️ Person to person transmission

Answer 20

Person to person transmission.

Question 21

Correctly describes mycetoma

Answer 21

Diagnosis should not be done if no sulfur granules are present

Question 22

Develops resistance to amphotericin B.

Answer 22

C. Parasilopsis

Question 23

Scientific name of baker’s yeast.

Answer 23

Saccharomyces cerevisae

Question 24

Sample collections

Histoplasma; __________
Aspergillus; ____________
Cryptococcus; __________
T. Metangrophytes; _________

Answer 24

Sputum
Ear discharge
CSF
Skin scrapings from feet infected with athlete’s foot.

Question 25

Cornmeal agar morphologies

Log in a stream;

Clysters with no chlamydospores;

Spiders;

Numerous chlamydospores;

Hockey sticks;

Answer 25

C. Pseudotropicalis
C. Tropicalis
C. Parasilopsis
C. Albicans
Geotrichum