Spirochetes

32 Questions

Settings
Please wait...
Bacteria Quizzes & Trivia

Questions and Answers
  • 1. 
    There are two recognize species of Leptospires. L.interrogans and L. biblexa. L.interrogans are _______.
    • A. 

      Pathogenic

    • B. 

      Saprophytic

  • 2. 
    There are two recognize species of Leptospires. L.interrogans and L. biblexa. L.biblexa are _______.
    • A. 

      Pathogenic

    • B. 

      Saprophytic

  • 3. 
    The ends of Leptospire have ________ rather than just tapering off.
    • A. 

      Circle end

    • B. 

      Hook

    • C. 

      Balloon shape

  • 4. 
    The motility of Leptospires are
    • A. 

      Slow and straight

    • B. 

      Rapid and rotational

    • C. 

      Rapid and straight

    • D. 

      Slow and rotational

  • 5. 
    Leptospires cannot be readily stained but can be covered with ______ and then seen.
    • A. 

      Platinum

    • B. 

      Bronze

    • C. 

      Gold

    • D. 

      Silver

  • 6. 
    Unstained cells are only visible under
    • A. 

      Brightfield

    • B. 

      Darkfield

    • C. 

      Phase contrast

    • D. 

      Immunofluorescent

  • 7. 
    Leptospires are ____ and can be grown on artifical media.
    • A. 

      Anaerobic

    • B. 

      Aerobic

  • 8. 
    Leptospires commonly used media is ______ medium.
    • A. 

      Mitchell's

    • B. 

      Danny's

    • C. 

      Randolph's

    • D. 

      Fletcher's

  • 9. 
    Dogs, rats and other rodents are the principle animal reservoirs of Leptospires. The organism is excreted in the _______.
    • A. 

      Blood

    • B. 

      CSF

    • C. 

      Urine

    • D. 

      Stool

  • 10. 
    Leptospirosis is a zoonotic disease usually associated with occupation exposure to animals or working with rats.
    • A. 

      True

    • B. 

      False

  • 11. 
    Laboratory diagnosis of Leptospires using either Blood or CSF requires the urine to be _______ prior to inoculation on Fletcher's medium in the dark.
    • A. 

      Evaporated

    • B. 

      Diluted

    • C. 

      Sterilized

    • D. 

      Concentrated

  • 12. 
    Borrelia is made up of several species of spirochetes, similar in morphology but different in pathogenic properties. Borrelia recurrentis causes _________.
    • A. 

      Lyme disease

    • B. 

      Relapsing fever

  • 13. 
    Borrelia is made up of several species of spirochetes, similar in morphology but different in pathogenic properties. Borrelia burgodorferi causes _________.
    • A. 

      Lyme disease

    • B. 

      Relapsing fever

  • 14. 
    All pathogenic borreliae are _______-borne.
    • A. 

      Water

    • B. 

      Air

    • C. 

      Arthropod

  • 15. 
    Borreliae are highly flexible and much more coiled than the Leptospires.
    • A. 

      True

    • B. 

      False

  • 16. 
    Borrelia can be stained and seen under the ______ microscope.
    • A. 

      Phase-contrast

    • B. 

      Brightfield

    • C. 

      Darkfield

  • 17. 
    Borreliae are cultured using what medium?
    • A. 

      Flecther medium

    • B. 

      Randolph medium

    • C. 

      Kelly medium

    • D. 

      Danny medium

  • 18. 
    Ticke-borne B. recurrentis has ________ louse-borne infection.
    • A. 

      Shorter

    • B. 

      Longer

  • 19. 
    Involving Borrelia recurrentis spirochetemia is worse during febrile epsiodes and is _______ between recurrences.
    • A. 

      More

    • B. 

      Less

  • 20. 
    Borrelia recurrentis infection is accompanied by sudden high fever, rigors, headache, muscle pain and weakness; febrile period is ___ to _____ days and ends abruptly with thedevelopment of an immune response. 
    • A. 

      1 to 5

    • B. 

      3 to 7

    • C. 

      5 to 10

    • D. 

      4 to 6

  • 21. 
    Borrelia recurrentis when it recurs several days to weeks later is less severe but similar in course.
    • A. 

      True

    • B. 

      False

  • 22. 
    Relapes that occur in Borrelia recurrentis are caused by antigenic variation; ____________ are changed during the course of an infection which allows them to evade the host response.
    • A. 

      Chromosomes

    • B. 

      DNA

    • C. 

      Surface antigens

  • 23. 
    Borreliae are suseceptible to many antibiotic but ______ is drug of choice.
    • A. 

      Quinone

    • B. 

      Tetracycline

    • C. 

      Penicillin

    • D. 

      Metrocylin

  • 24. 
    2 out of  these 3 drugs are used to treat B. burgdorferi in early diagnosis.
    • A. 

      Ceftriaxone

    • B. 

      Doxycycline

    • C. 

      Amoxicillin

  • 25. 
    This drug is used to treat late stages of Borrelia burgdorferi.
    • A. 

      Tetracycline

    • B. 

      Ceftriaxone

    • C. 

      Doxycycline

    • D. 

      Amoxicillin

  • 26. 
    Pathogenic treponemes are thin, spiral organisms. Spiral are regular with _____ to _____ spirals per organism.
    • A. 

      5-10

    • B. 

      9-20

    • C. 

      1-2

    • D. 

      4-14

  • 27. 
    Trepones are so thin and can be difficult to see on darkfield microscopy.
    • A. 

      True

    • B. 

      False

  • 28. 
    Endemic syphilis or bejel is caused by T. pallidum. It is transmitted by direct contact or sharing contaminated __________.
    • A. 

      Water

    • B. 

      Eating utensils

    • C. 

      Food

  • 29. 
    Pinta is caused by T. carateum, found in tropical areas of Central and South America.
    • A. 

      True

    • B. 

      False

  • 30. 
    Yaws is caused by T. pallidum ssp. pertinue.
    • A. 

      True

    • B. 

      False

  • 31. 
    Yaws resembles what in the early stages?
    • A. 

      HIV

    • B. 

      Measles

    • C. 

      Syphilis

    • D. 

      Cancer

    • E. 

      Chicken pox

  • 32. 
    Three nonveneral treponemal diseases occur in different geographic areas. All three have primary, secondary and tertiary stage but which one is uncommon?
    • A. 

      Primary

    • B. 

      Secondary

    • C. 

      Tertiary