Mcq Subject: Microbiology

The operating temperature in an ethylene oxide sterilization during a warm cycle is

A. 49-63oC

B. 92- 110oC

C. 20-35oC

D. 68-88oC

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Which pox wont grow in egg, animal cells –

A. Cow pox

B. Vaccinia

C. Variola

D. Molluscum

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Staphylococcus is?

A. Gram-positive cocci

B. Gram-negative cocci

C. Gram-positive bacillus

D. Gram-negative bacillus

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All of the following are glycoproteins except?

A. Blood antigen

B. Albumin

C. Immunoglobulin

D. hCG

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Peusis toxin acts by all of the following mechanisms except ?

A. ADP ribosylation of proteins associated with receptors

B. Increase cyclic AMP

C. Increased calcium release from sarcoplasmic reticulum

D. Acts through G alpha subunit

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Most common genetic play in Neisseria infection is

A. Male gender

B. HLA b27

C. Complement deficiency

D. IgA deficiency

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Toxigenicity of C. diphtheria is determined by-

A. Elek's gel ppt test

B. Aselole's reaction

C. Nagler's reaction

D. All

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hich of the following is not true about Neisseria gonorrhoea –

A. It is an exclusive human pathogen

B. Some strains may cause disseminated disease

C. Acute urethritis is the most common manifestation in males

D. All strains are highly sensitive to penicillin

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Raynolds-Braude phenomenon is shown by:

A. Candida albicans

B. Mucor

C. Cryptococcus

D. Aspergillus

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The antibody iso-type associated with the mucosal immune system

A. IgA

B. IgD

C. IgE

D. IgM

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