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Biotechnology and Biomedical Engineering
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Microbiology Virtual Lab I
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Differential and Cytological Staining Techniques
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Differential and Cytological Staining Techniques
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Theory
Procedure
Self Evaluation
Animation
Assignment
Reference
Feedback
1)
Primary stain used for staining the spores of Bacillus
Methylene blue
Malachite green
Safranin
Crystal Violet
2)
Dorner’s method is used to visualize which of the following structures of bacteria?
Capsule
Metachromatic granules
Endospores
Flagella
3)
The characteristic feature of Cornybacterium diphtheria is
Chinese characters or palisades
Drum like arrangement
Cluster like arrangement
None of the above
4)
Mycobacterium tuberculosis cannot be easily decolorized with acid alcohol due to
Mycolic acid
Peptidoglycan
Lipid
All the above
5)
The gelatinous outer layer of the bacterial cells
Cell wall
Capsule
Flagella
Cell membrane
6)
The decolorizing agent in positive capsule staining
Sulphuric acid
Water
Acid alcohol
Copper sulfate
7)
Example of an endospore producing organism
Staphylococcus aureus
Streptococcus pneumonia
Bacillus subtilis
All the above
8)
Example of capsulated organism
Bacillus megaterium
Streptococcus pyogenes
Streptococcus pneumoniae
Streptococcus agalactiae
All the above
Cite this Simulator:
vlab.amrita.edu,. (2012). Differential and Cytological Staining Techniques. Retrieved 23 March 2025, from vlab.amrita.edu/?sub=3&brch=73&sim=1338&cnt=3
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