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Home Microbiology Cell Cultures and Characteristics Comments

  • Question
  • Treponema species from human oral cavity can be selected by using


  • Options
  • A. pH of the medium
  • B. incubation temperature
  • C. cell size and motility
  • D. all of these

  • Correct Answer
  • cell size and motility 


  • Cell Cultures and Characteristics problems


    Search Results


    • 1. Peptone water and nutrient broth are

    • Options
    • A. selective media
    • B. enriched media
    • C. basal media
    • D. none of these
    • Discuss
    • 2. When a substance is added to a liquid medium which inhibits the growth of unwanted bacteria and favors the growth of wanted bacteria, it is known as

    • Options
    • A. differential medium
    • B. enriched medium
    • C. enrichment medium
    • D. selective medium
    • Discuss
    • 3. A disease producing species occurring in a mixed culture can often be selected on the basis of its

    • Options
    • A. pathogenic properties
    • B. special carbon source
    • C. special nitrogen source
    • D. none of these
    • Discuss
    • 4. Which of the following hint(s) suggest/s that a given specimen is likely to contain anaerobic bacteria?

    • Options
    • A. Gas in specimen
    • B. Foul odour
    • C. Presence of sulphur granules
    • D. All of these
    • Discuss
    • 5. Which of the following bacteria can grow in alkaline pH?

    • Options
    • A. Shigella
    • B. Lactobacilli
    • C. Salmonella
    • D. Vibrio cholerae
    • Discuss
    • 6. All bacteria that inhabit the human body are

    • Options
    • A. heterotrophs
    • B. chemolithotrophs
    • C. autotrophs
    • D. phototroph
    • Discuss
    • 7. Which of the following chemotherapeutic agents may affect the growth of Campylobacter jejuni?

    • Options
    • A. Vacomycin
    • B. Polymyxin
    • C. Trimethoprim
    • D. None of these
    • Discuss
    • 8. Which of the following methods is most likely to be quantitative?

    • Options
    • A. Dilution and plating
    • B. Gram staining
    • C. Wet mount
    • D. None of these
    • Discuss
    • 9. Plate counts are often reported as

    • Options
    • A. cfu
    • B. cfu/ml
    • C. Both (a) and (b)
    • D. thousands/ml
    • Discuss
    • 10. When a substance is added to a solid medium which inhibits the growth of unwanted bacteria but permits the growth of wanted bacteria, it is known as

    • Options
    • A. differential medium
    • B. enriched medium
    • C. enrichment medium
    • D. selective medium
    • Discuss


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