Microbiology MCQs

Page No. 24

Cell wall deficient bacteria are_______________?


aEscherichia Coli

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bStaphylococci

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cSpirochetes

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dMycoplasma

✓


View Answer Mycoplasma

Purpose of Sterilization is to eliminate________________?


aBacteria

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bViruses

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cSpore formers

✓


dFungus

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View Answer Spore formers

A child presents with infective skin lesions of the leg. Culture was done which showed gram positive cocci in chains and haemolytic colonies. Which of the following tests will best identify the organism ?


a Bile solubility

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bOptochin sensitivity

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c Bacitracin sensitivity

✓


dCataslase positive

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The Manufacturing unit of surgical needle & sutures are sterilized by ________________?


aGamma-Rays

✓


bX-Rays

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cAutoclaving

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dBoiling

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View Answer Gamma-Rays

Bacterial cell does not possess___________________?


adna

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bRibosome

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cMitochondria

✓


dCell wall

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View Answer Mitochondria

Post streptococcal acute glomerulo nephritis is an example of________________?


aType I hypersensitivity

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bType II hypersensitivity

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cType III hypersensitivity

✓


dType IV hypersensitivity

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The Process of attenuation can be achieved by all except___________________?


aGrowing bacteria in adverse environment

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bGrowing bacteria in unconventional host

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cSerial passage in an experimental host

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d Repeated cultures in artificial media

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The term epitope refers to________________?


acomplete antigen molecule

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bHapten

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cImmunogen

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dSmallest antigenic determinant

✓



Cold sterilization refers to the process of sterilization by use of____________________?


aUltra violet rays

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b Ultrasonic vibrations

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cInfrared rays

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dGamma rays

✓


View Answer Gamma rays

Phase contrast microscopy is based on principle of__________________?


a Different refractive indices of object

✓


bDifferent reflective indices of object

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cLight scattering

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dLight attenuation

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