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Identification of Bacteria

Identification of Bacteria
Catalase production is negative in which of the following?

Proteus
Salmonella
Streptococcus
Staphylococcus

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Identification of Bacteria
Which of the following shows a positive urease test?

Both (a) and (b)
None of these
Klebsiella
Proteus

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Identification of Bacteria
The organisms that can be acid-fast stained is

all of these
Nocardia
Lepra bacilli
Tubercle bacilli

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Identification of Bacteria
What is the order of reagents used in the Gram stain?

Crystal violet, safranin, iodine, decolorizer
Safranin, crystal violet, decolorizer, iodine
Crystal violet, iodine, decolorizer, safranin
Crystal violet, iodine, safranin, decolorizer

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Identification of Bacteria
Gram staining was developed accidentally in 1884 by

Alexander Fleming
Robert Gram
Hans Christian Gram
Joseph Christian Gram

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Identification of Bacteria
Which of the following is a substitute for crystal violet used in gram-staining procedure?

Bromocresol green
Safranin
Phenolpthalene
Methylene blue

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