practice qs

Question 1

Which of the following techniques are used in differentiation of fungi?

1. molecular and culture-based
2. serologic assays
3. antibody-detected
4. calcofluor white staining

Answer 1

molecular and culture-based

Question 2

standard specimen for diagnosis of Pneumocystis spp.

Answer 2

bronchoalveolar lavage

Question 3

which is not a biochemical characteristics of C. neoformans?

1. latex agglutination positive
2. positive urease
3. inability to grow in birdseed agar
4. negative in nitrate reduction

Answer 3

inability to grow in birdseed agar

Question 4

sexual diagnostic stage of P. boydii

Answer 4

cleistothecia

Question 5

molecular target for fusarium

Answer 5

EF-1

Question 6

yeast reported to cause mycotic keratitis

Answer 6

Candida albicans

Question 7

Aspergillus spp., Mucor spp., Penicillum spp., and Rhizopus spp., are collectively known to cause?

Answer 7

ear infections

oncomycosis

Question 8

Candida spp. that can give (+) germ tube reaction and (-) trehalose

Answer 8

C. dublinensis

Question 9

fungal stain for melanin

Answer 9

Masson Fontana

Question 10

beaver’s tail-like conidia

Answer 10

Epidermophyton flocossum

Question 11

spaghetti and meatballs fungus

Answer 11

Malassezia furfur

Question 12

Histoplasma capsulatum exoantigen

Answer 12

H&M

Question 13

San Joaquin Valley fever

Answer 13

Coccidioides immitis

Question 14

Gilchrist’s disease

Answer 14

Blastomyces dermatitidis

Question 15

Germ Tube Test Procedure

Answer 15

1. Mix fungal colony with serum
2. Incubate for 3hrs
3. Observe in HPO

Question 16

Biosafety requirement for Histoplasma capsulatum

Answer 16

BSL-3

Question 17

Usual cause of meningitis:

1. Coccidioides
2. Candida
3. C. neoformans
4. All of the above

Answer 17

All of them

Question 19

fungi in UTI

Answer 19

Candida spp.

Question 20

which group of molds can be ruled out when septate hyphae is seen?

1. dematiacious
2. zygomycetes
3. dermatophytes
4. dimorphic molds

Answer 20

zygomycetes

Question 21

Best for initial identification of aspergillosis by soluble antigen testing

Answer 21

serum

Question 22

• growth on SBA: dimorphic
• mold: thick, spherical tuberculated macroconidia

Answer 22

Histoplasma capsulatum