Microbiology Quiz Questions

Bacterial Characteristics and Diagnosis

• Vibrio bacterial species can grow on alkaline peptone water.
• The Catalase test detects bacteria possessing Cytochrome C.
• Proteus is a bacterium known to exhibit the Swarming phenomenon.
• E. coli appears as green shining colonies on EMB agar.

Bacterial Sampling and Toxins

• A Swab is used to collect throat and nasopharynx samples.
• Botox toxin is extracted from Clostridium botulinum (not Clostridium potulinum).
• Klebsiella colonies have a mucoid appearance due to the production of a Capsule.

Bacterial Identification

• Proteus is a non-lactose fermenting enteric bacterium.
• Staphylococci are not gram-negative diplococcic bacteria (Neisseria are).
• Pseudomonas bacteria produce exopigments.

Bacterial Diagnosis Methods

• Various methods are used for bacterial diagnosis, including:
  • Biochemical tests (e.g., Catalase test)
  • Cultural characteristics (e.g., growth on specific media, colony morphology)
  • Microscopy (e.g., gram staining)
  • Toxin detection (e.g., Botox toxin)