MLS 335 Practice Exam 4 Lecture 15
- 1.Organisms that cause systemic diseases share these characteristics?
- A.
Mode of transmission, dimorphism, systemic semination
- B.
Mode of transmission, dimorphism,systemic dissemination
- C.
Demographic area, unimorphism, systemic dissemination
- 2.Mode of transmission of systemic diseases?
- A.
Inhalation of infectious conidia
- B.
Ingestion of infectious conidia
- C.
Cutaneous exposure of conidia
- 3.What temperature does yeast form at? Mold?
- A.
25C: 37C
- B.
37C: 25C
- C.
42C: 25C
- 4.Known as Gilchrist’s disease?
- A.
Blastomyces enteritis
- B.
Coccidioides immitis
- C.
Blastomyces dermatitidis
- 5.Blastomyces dermatitis is endemic in what North American region?
- A.
Michigan and Detroit river basin
- B.
Mississippi and Ohio river basin
- C.
Colorado and Colorado river basin
- 6.Blastomyces dermatitidis occurs naturally in what 2 animals?
- A.
Cats and mice
- B.
Sheep and cats
- C.
Dogs and horses
- 7.Blastomyces dermatitidis is most prevalent in who and from what type of exposure?
- A.
Old-aged men: water
- B.
Middle-aged men: soil
- C.
Middle-aged women: soil
- 8.What is the clinical infection pathophysiology of Blastomyces dermatitidis?
- A.
Asymptomatic-> Pulmonary disease-> Invasive disease
- B.
Asymptomatic-> Pulmonary disease-> cardiac disease
- C.
Symptomatic-> Invasive disease-> gasteritis
- 9.Blastomyces dermatitidis is not fatal?
- A.
False
- B.
True
- 10.Diagnosis of Blastomyces dermatitidis is based on what 2 samples?
- A.
Saliva & underneath nails
- B.
Sputum & exudative material from cutaneous lesions and tissue
- C.
Urine & subcutaneous scrapings
- 11.Direct Microscopic Exam of Blastomyces dermatitidis shows?
- A.
Yeast cells with double walls & buds connected by broad base
- B.
Small yeast cells – may be seen in monocytes and macrophages
- C.
Narrow neck between mother and daughter cells
- 12.Stained Blastomyces dermatitidis shows what?
- A.
Fluorescent Antibody
- B.
Fluorescent Antigen
- C.
Dark Antigen
- 13.Colony culture characteristics of Blastomyces dermatitidis at 25C?
- A.
White,hard,concentric circles
- B.
Black,fluffy,concentric spirals
- C.
White,fluffy,concentric circles
- 14.Blastomyces dermatitidis resembels what other colony microscopically?
- A.
H. capsulatum
- B.
C. immitis
- C.
P. marneffei
- 15.What is the microscopic morphology of Blastomyces dermatitidis at 25C?
- A.
Large multipolar budding
- B.
Oviod to dumbbell shaped
- C.
Elliptical fission (septate) yeasts inside phagocytes
- 16.What is the sexual form of Blastomyces dermatitidis?
- A.
Diffusion
- B.
Budding
- C.
Teleomorph
- 17.How is Blastomyces dermatitidis identified?
- A.
Conversion from mold to yeast at 37C
- B.
Conversion from yeast to mold at 37C
- C.
Conversion from mold to yeast at 25C
- 18.Fungal Immunodiffusion Test (FID) is used to detect what?
- A.
Endoantigens
- B.
Exoantigens
- C.
Enteroantigens
- 19.What supernatant solution is used for Fungal Immunodiffusion Test (FID)?
- A.
Frozen
- B.
Diluted
- C.
Concentrated
- 20.What exoantigen is identified in B. dermititidis?
- A.
HL
- B.
A
- C.
H
- 21.What exoantigen is identified in H. capsulatum?
- A.
H,M
- B.
A,L
- C.
HL
- 22.What exoantigen is identified in C. immitis?
- A.
F,HL,HS
- B.
G,HV,HI
- C.
A,HM,HT
- 23.What exoantigen is identified in P. brasiiensis?
- A.
4,5,6
- B.
1,2,3
- C.
7,8,9
- 24.Histoplasma capsulatum is endemic in what Northern American areas?
- A.
Michigan,Maine,Texas
- B.
Ohio,Mississippi,Missouri
- C.
Florida,Georgia,Tennesse
- 25.Histoplasma capsulatum causes all of the following disorders? check all that apply.
- A.
Reticuloendothelial cytomycosis
- B.
Cave disease
- C.
Spelunker's disease
- D.
Conidia's disease
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