Exam 3 4 Lectures

26 Questions | Total Attempts: 62

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Lecture Quizzes & Trivia

Questions and Answers
  • 1. 
    The tuberculin skin test measures DTH to a purified protein derivative (PPD) of tuberculin. With reference to this test
    • A. 

      A negative PPD test can be obtained from an individual who had a primary infection 20 years ago

    • B. 

      A positive PPD indicates that the individual has active tuberculosis

    • C. 

      A positive PPD cannot be obtained from an individual who had a primary infection twenty years ago

    • D. 

      A positive PPD can be obtained within 24 hours after an inidivudal is infected with M. Tuberuclosis

    • E. 

      A negative PPD test in an individual with AIDS show the patient is not infected with M. tuberculosis

  • 2. 
    Which of the following is a false statement about reactivation TB?
    • A. 

      Tubercle bacilli can remain viable for long periods of time and be casual agents of reactivation

    • B. 

      It is associated with immunosuppression due to malnutrition, alchool, age, and puberty

    • C. 

      The primary infection can merge into the reactivation type

    • D. 

      The chronic fever and weight loss may be mediated by macrophage derived TNF

    • E. 

      The majority of individuals succumb to reactivation TB

  • 3. 
    Which of the following statements is false regarding Mycobacterium tuberculosis and tb?
    • A. 

      Humans have a high innate immunity to M. Tuberculosis

    • B. 

      Less than 10 bacilli can initiate a pulmonary infection in suceptible individuals

    • C. 

      A animal variant (m. bovis) found in cows can cause tuberculosis in humans

    • D. 

      Spread of M. tuberculosis outside of the lung has no serious clinical manifestations

    • E. 

      Because of the high lipid content of the cell wall, once stained M. tuberculosis cannot be easily distained

  • 4. 
    In which of the following would penicillin be the treament of choice (assuming no resistance)
    • A. 

      Treponema pallidium

    • B. 

      Mycoplasma pneumoniae

    • C. 

      Mycoplasma hominins

    • D. 

      Ureaplasma urealyticum

  • 5. 
    Mycoplasma pneumoniae infection can be diagnosed by
    • A. 

      The celar distinction of its clinical manifestations relative to those of bacterail and viral infections

    • B. 

      The rapid growht of cultures from throat swabs or sputum

    • C. 

      The presence of low titer cold hemagglutinins

    • D. 

      The rise in serum antibody, detected by compliment fixation

    • E. 

      Demonstration of urease activity

  • 6. 
    In the lab, what is the distinguishing feature of mycolplasma hominins?
    • A. 

      Serolgical tests such as complement fixation

    • B. 

      Arginine break down

    • C. 

      Urease production

    • D. 

      Fried Egg Colonies

  • 7. 
    All of the following statmenets concering Mycoplasma pneumonia are true except
    • A. 

      It can be treated with erythormycin or tetracycline

    • B. 

      It sometimes is called walking pneumonia

    • C. 

      Predilection for an older individual

    • D. 

      Pneumonia is usually less severe than other bacterial pneumonia

    • E. 

      Accumulation of metabolites causes cytopathic effects

  • 8. 
    Rickettsia prowazekii
    • A. 

      Causes endemic typhus

    • B. 

      Replicates in endothelial cells

    • C. 

      Is transmitted from birds to humans by mosquitoes

    • D. 

      Exists in two different morphologic forms

    • E. 

      Causes ornithosis

  • 9. 
    Rickettsia prowazekii
    • A. 

      Causes epidemic typhus

    • B. 

      Replicates in columnar epithelial cells

    • C. 

      Is transmitted from birds to humans by mosquitoes

    • D. 

      Exists as two different morphologic forms

    • E. 

      Causes ornithosis

  • 10. 
    R. Rickettsi
    • A. 

      Causes rocky mountain spotted fever

    • B. 

      Causes epidemic typhus

    • C. 

      Causes endemic typhus

    • D. 

      Is transmitted from birds to humans by mosquitos

    • E. 

      Causes ornithosis

  • 11. 
    C. Burnetti
    • A. 

      Causes rocky mountain spotted fever

    • B. 

      Causes epidemic typhus

    • C. 

      Causes endemic typhus

    • D. 

      Is transmitted from birds to humans by mosquitos

    • E. 

      Causes Q fever

  • 12. 
    Which of the folowing causes Ornithosis?
    • A. 

      C. psittaci

    • B. 

      C. trachomatis

    • C. 

      C. pneumonaie

    • D. 

      R. rickettsil

    • E. 

      R. prowazeki

  • 13. 
    Which of the following is the causitive agent for syphilis?
    • A. 

      Treponema pallidium

    • B. 

      Borrelia burgdorferi

    • C. 

      M. Tuberculosis

    • D. 

      M. avium

    • E. 

      M. hominins

  • 14. 
    Which of the following is the causitive agent for lime disease?
    • A. 

      Treponema pallidium

    • B. 

      Borrelia burgdorferi

    • C. 

      M. Tuberculosis

    • D. 

      M. avium

    • E. 

      M. hominins

  • 15. 
    Condylomata lata can occur as a result of an infection with
    • A. 

      Treponema pallidium

    • B. 

      Borrelia burgdorferi

    • C. 

      M. Tuberculosis

    • D. 

      M. avium

    • E. 

      M. hominins

  • 16. 
    Which of the following is transmitted from rats to humans?
    • A. 

      R. Typhi

    • B. 

      R. rickettsil

    • C. 

      R. prowazeki

    • D. 

      Coxiella burnetti

    • E. 

      C. pneumonaie

  • 17. 
    Infection with which one of the following organisms results in the generation of autoantibodies to heart muscle, probably resulting in atherosclerosis?
    • A. 

      C. pneumoniae

    • B. 

      C. psittaci

    • C. 

      C. trachomatis

    • D. 

      R. rickettsil

    • E. 

      R. prowazeki

  • 18. 
    Which of the following statements concerning lyme disease is false?
    • A. 

      It is primarily transmitted via ticks

    • B. 

      It can later develop into chronic arthritis

    • C. 

      Erythema migrans preffered treatment is doxycycline, although the definitive lab diagnosis involves an ELISA test and Western Blot analysis

    • D. 

      It is not possible to develop a multi system infection from it

    • E. 

      The primary treatment invovles doxycycline and amoxicilin

  • 19. 
    Which of the following causes blindness?
    • A. 

      C. trachomatis (A-C)

    • B. 

      C. trachomatis (D-K)

    • C. 

      C. trachomatis (L)

    • D. 

      C. Psittaci

    • E. 

      C. Pneumonaie

  • 20. 
    The preferred threatment of the Ehrlichia species is
    • A. 

      Doxycycline

    • B. 

      Tetracycline

    • C. 

      Chloramphnicol

    • D. 

      Erythromycin

    • E. 

      Oxfloaxin

  • 21. 
    Concerning C. trachomatis, which is incorrect?
    • A. 

      C. trachomatis is a obligate intracellular parasite

    • B. 

      C. trachomatis is found primarily in epithelial cells

    • C. 

      C. trachomatus is detected via specific foulurescence - conjugate antibodies

    • D. 

      C. trachomatis is tested for using ELISA and PCR

    • E. 

      C. trachomatis is tested for using iodine staining

  • 22. 
    Which of the following is associated with Brill's disease?
    • A. 

      R. prowazekii

    • B. 

      R. rickettsil

    • C. 

      R. typhi

    • D. 

      Coxiella burnetti

    • E. 

      C. psittaci

  • 23. 
    All of the following are traits of mycoplasma pneumonia except
    • A. 

      The bacteria adheres via P1 to sialic acid residues on epithelia cells

    • B. 

      It inhibits catalase, leading to a increase in H2O2

    • C. 

      Itt causes alpha hemolysis on a plate of sheep blood

    • D. 

      It is treated by tetracycline or erythromycin

  • 24. 
    Concerining mycoplasma hominins, which statement is false?
    • A. 

      It is sensitive to tetracycline and reistant to erythormycin

    • B. 

      It inhabits the GI tract

    • C. 

      It is a opporutnistic organism

    • D. 

      It is broken down by urease

  • 25. 
    Mycobacterium leprae is the causal agent for leprosy. Which statement is correct?
    • A. 

      Two disease forms of leprosy are recognized, tuberculoid and lepromatous

    • B. 

      The incubation period for leprosy is usually less than 6 months

    • C. 

      Using a skin test based on DTH to lepromin, tuberculoid cases are negative and lepromatous cases are positive

    • D. 

      In tuberculoid leprosy, CMI is defiient, nad growth of M. leprae is unimpeded

    • E. 

      There are a estimated 100 thousand people infected with M. leprae in asia, africa, and latin america

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