Spirochetes MCQ

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• Which group of bacteria among the following give a positive reaction by the oxidase test?
  ক

  Spirochetes

  খ

  Aerobic/Microaerophilic, Motile, Helical/Vibroid, Gram-negative bacteria

  গ

  Non-motile, Gram-negative, Curved bacteria

  ঘ

  Aerobic, Gram-negative rods and cocci
• Which genus among the following has certain similarities to the genus Bdellovibrio?
  ক

  Azospirillum

  খ

  Oceanospirillum

  গ

  Campylobacter

  ঘ

  Vamprirovibrio
• Which of the following causes diarrhea in humans?
  ক

  A.lipoferum

  খ

  L.interrogans

  গ

  C.jejuni

  ঘ

  E.coli
• Which of the following have bipolar tufts of flagella?
  ক

  Aquaspirillum

  খ

  Azospirillum

  গ

  Cristispira

  ঘ

  Borrelia
• Which of the following bacteria causes syphilis in humans?
  ক

  Treponema dysenteriae

  খ

  Treponema pallidum

  গ

  Leptospira biflexa

  ঘ

  Leptospira interrogans
• The family Leptospiraceae are aerobes.
  ক

  True

  খ

  False
• Which of the following methods is used for viewing spirochetes?
  ক

  Bright-field microscopy

  খ

  Phase-contrast microscopy

  গ

  Dark-field microscopy

  ঘ

  Electron microscopy
• Spirochetes like other bacteria swim best in media of low viscosity.
  ক

  True

  খ

  False
• Where is the endoflagella located in Spirochetes?
  ক

  In the cell membrane

  খ

  In the cytoplasm

  গ

  In the peptidoglycan layer

  ঘ

  In the periplasmic space
• The endoflagella is present in which class of bacteria?
  ক

  Spirilla

  খ

  Spirochetes

  গ

  Bacillus

  ঘ

  Coccus