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Identification of Bacteria

Identification of Bacteria
The gram-negative organisms is

Actinomyces
Bacillus
Clostridium
None of these

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Identification of Bacteria
Gram staining was developed accidentally in 1884 by

Joseph Christian Gram
Robert Gram
Hans Christian Gram
Alexander Fleming

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Identification of Bacteria
Which of the following inference(s) indicate(s) the ability of an organism to utilize citrate as a sole source of carbon in Simmon's citrate medium?

Blue colour
Appearance of growth
None of these
Both (a) and (b)

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

Pseudomonas
Neisseria
Vibrio
All of these

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Identification of Bacteria
What is the colour of gram -postive bacteria on a gram staining?

Colourless
Purple
Pink
Green

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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, decolorizer, safranin
Crystal violet, iodine, safranin, decolorizer

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