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Identification of Bacteria

Identification of Bacteria
The gram-negative organisms is

None of these
Clostridium
Actinomyces
Bacillus

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Identification of Bacteria
Production of acetoin can be detected by which of the following tests?

Indole test
Methyl red test
Citrate test
Voges-Proskauer test

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Identification of Bacteria
Which of the following(s) is/ are oxidase-positive bacteria?

Vibrio
Neisseria
Pseudomonas
All of these

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

Phenolpthalene
Methylene blue
Bromocresol green
Safranin

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

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

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

Staphylococcus
Proteus
Salmonella
Streptococcus

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