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Identification of Bacteria

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

Safranin
Bromocresol green
Phenolpthalene
Methylene blue

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Identification of Bacteria
The primary stain of Gram's method is

safranin
crystal violet
phenolpthalene
methyl red

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Identification of Bacteria
At what concentration of sulphuric acid, Nocardia resists decolourization?

5% sulphuric acid
0.5% sulphuric acid
8% sulphuric acid
10% sulphuric acid

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Identification of Bacteria
The deinococci are gram-positive cocci and rods that are distinctive in their unusually great resistance to

desiccation
both (a) and (b)
radiation
extreme temperatures

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Identification of Bacteria
The gram-negative organisms is

None of these
Clostridium
Bacillus
Actinomyces

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

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

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