Microbiology MCQs

Page No. 11

The facultative anaerobic bacteria are those who are_______________?


aUnable to grow in the presence of oxygen

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bUnable to grow in the absence of oxygen

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cAble to grow in the presence of carbon dioxide

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dAble to grow in the presence of absence of oxygen

✓



Actinomycosis is caused by______________?


aFungus

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bAcid fast, non-motile bacillus

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cAnaerobic, gram positive, non-acid fast bacteria.

✓


dRetrovirus

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The commonly used fluorescent dye in the detection of tubercie bacilli________________?


aAcridine orange

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bThioglavin

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cCongo red

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dAuramine and Rhodamine

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Nagglers reaction is used in the diagnosis of______________?


a Malaria

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bWhooping cough

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cGas gangrene

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dWool sorters disease

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View Answer Gas gangrene

Loss of capsule in bacteria is generally associated with______________?


a Decease in virulence

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bLoss of infectivity

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cInability to spread through tissue

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dincrease in invasiveness

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Which of the following structures, found external to the bacterial cell wall, are involved in bacterial attachment to cell surfaces?


aCapsule

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bFlagella

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c Pili

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dMesosomes

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View Answer Pili

Encapsulation in bacteria helps in__________________?


aSpore formation

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bDecreased virulence

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cPrevent their phagocytosis

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dOxygen effect

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Neurotoxin of tetanus acts on______________?


aSynapse

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bMuscle

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cBrain

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dSpinal card

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View Answer Spinal card

Organism most frequently associated with urinary tract infections is_________________?


aNeisseria gonorrhea

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bEscherichia coli

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cT-strain mycoplasma

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dStreptococcus fecalis

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View Answer Escherichia coli

Growth factor needed for Salmonella_________________?


aTryptophan

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bNiacin

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cB-12

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dCitrate

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View Answer Tryptophan

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