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Questions and Answers
Which method is used to detect Treponema pallidum in material from primary or secondary syphilitic lesions?
Which method is used to detect Treponema pallidum in material from primary or secondary syphilitic lesions?
- Saline mount
- Hanging drop technique
- Darkfield microscopy (correct)
- Phase-contrast microscopy
What is the primary stain used in Acid Fast Stain?
What is the primary stain used in Acid Fast Stain?
- Phenol
- Heat
- Methylene blue
- Carbol fuchsin (correct)
What is the purpose of 10% potassium hydroxide (KOH) preparation?
What is the purpose of 10% potassium hydroxide (KOH) preparation?
- To detect Treponema pallidum
- To break down the tissue surrounding the fungal mycelia (correct)
- To visualize bacteria with thick cell walls
- To retain the crystal violet-iodine complex dye after decolorization
Which stain is used to differentiate bacteria based on cell wall characteristics?
Which stain is used to differentiate bacteria based on cell wall characteristics?
What is the purpose of Phase-contrast microscopy?
What is the purpose of Phase-contrast microscopy?
What is the purpose of the hanging drop technique in bacterial identification?
What is the purpose of the hanging drop technique in bacterial identification?
Which stain is used to differentiate bacteria based on the presence of teichoic acid in their cell walls?
Which stain is used to differentiate bacteria based on the presence of teichoic acid in their cell walls?
What is the primary purpose of 10% potassium hydroxide (KOH) preparation in bacterial identification?
What is the primary purpose of 10% potassium hydroxide (KOH) preparation in bacterial identification?
What is the main function of phase-contrast microscopy in bacterial identification?
What is the main function of phase-contrast microscopy in bacterial identification?
What is the primary stain used in Ziehl-Neelsen (acid-fast) stain?
What is the primary stain used in Ziehl-Neelsen (acid-fast) stain?
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