Mcq Subject: Microbiology

Which is true of Entero bacteriacae –

A. All are oxidase negative

B. Nitrate reduction negative

C. Glucose not femented by all

D. Motility by polar flagellum

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Cutaneous larva migrans is caused by: September 2012

A. A. braziliense

B. Toxocara cani

C. Strongyloides

D. Necator americana

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Which one of the following is a major component in activation of the complement alternative pathway:

A. C1

B. C2

C. C3

D. C4

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Epidemic pleurodynia is caused by ?

A. Enterovirus -70

B. Coxsackie - A virus

C. Coxsackie -B virus

D. Enterovirus

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The following are features of pneumococcus except-

A. Bile insolubility

B. Optochin sensitivity

C. Gram positive

D. Encapsulated

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To fully activate a naive CD4 T cell, the antigen-presenting cell has to express?

A. MHC class I and class II molecules

B. Interleukin-2

C. B7 and MHC class II molecules

D. CD28 and MHC class II molecules

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Bile solubility is used for?

A. Differentiation of staphylococcus from streptococcus

B. Differentiation of group B streptococci from other streptococci

C. Differentiation of pneumococci from streptococci

D. Differentiation of streptococci from neisseria

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Which does not has a known animal reservoir

A. Brucella melitensis

B. Bordettela peussis

C. Pasturella multocida

D. Francisella tularensis

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One of the following about corynebacterium diphtheriae is wrong –

A. Gram negative

B. Ernest babes granules seen

C. Chinese letter pattern

D. Prevented by immunisation

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A 60-year-old woman complains to a physician because several of her toe nails are discolored. Physical examination demonstrates crumbling, friable nails with distal-lateral separation from the nail bed. Hyperkeratotic debris is present under the affected pa of the nail. Which of the following is the most likely pathogen?

A. Aspergillus

B. Candida

C. Mucor

D. Trichophyton

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