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Identification of Bacteria

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

Staphylococcus
Salmonella
Streptococcus
Proteus

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

Bromocresol green
Phenolpthalene
Methylene blue
Safranin

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Identification of Bacteria
Which of the following(s) show(s) positive results for phenylalanine deaminase test?

Proteus
Morganella
All of these
Providencia

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Identification of Bacteria
The process of Gram staining is based on the ability of bacterial cell wall

none of above
to retain the safranin dye
to retain the crystal violet dye during solvent treatment.
to retain part of both dyes

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Identification of Bacteria
The gram-negative organisms is

None of these
Clostridium
Actinomyces
Bacillus

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Identification of Bacteria
Gram staining was developed accidentally in 1884 by

Hans Christian Gram
Robert Gram
Alexander Fleming
Joseph Christian Gram

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