Exam 4, Micro Study For Final

54 Questions | Total Attempts: 149

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Study Guide Quizzes & Trivia

Exam 4 study guide for final, summer 2010


Questions and Answers
  • 1. 
    Infection occurs when
    • A. 

      Contaminants are present on the skin

    • B. 

      A person swallows microbes in/on food

    • C. 

      A person inhales microbes in the air

    • D. 

      Pathogens enter and multiply in body tissues

    • E. 

      All of the choices are correct

  • 2. 
    All infectious diseases
    • A. 

      Are contagious

    • B. 

      Only occur in human

    • C. 

      Are caused by microorganisms or their products

    • D. 

      Are caused by vectors

    • E. 

      Involve viruses as the pathogens

  • 3. 
    Which is not terminology used for resident flora
    • A. 

      Pathogenic flora

    • B. 

      Normal flora

    • C. 

      Indigenous flora

    • D. 

      Normal microflora

    • E. 

      All of the above

  • 4. 
    Endogenous infectios agents arise from microbes that are
    • A. 

      In food

    • B. 

      In patients own normal flora

    • C. 

      On fomites

    • D. 

      In the air

    • E. 

      Transmitted from one person

  • 5. 
    Virulence factors include all of the following except
    • A. 

      Capsules

    • B. 

      Ribosomes

    • C. 

      Exoenzymes

    • D. 

      Endotoxin

    • E. 

      Exotoxin

  • 6. 
    These bacteria are opportunistic pathogens. These microbes pose an increased threat for those suffering from cystic fibrosis
    • A. 

      Pseudomonas sp.

    • B. 

      Enterobacteriaceae

    • C. 

      Staphyloicoccus sp.

    • D. 

      Streptococcus sp.

  • 7. 
    Which STD is estimated to be the most prevalent in cases each year in the USA
    • A. 

      Herpex simplex

    • B. 

      AIDS

    • C. 

      Human papillomavirus

    • D. 

      Syphillis

    • E. 

      Trichomoniasis

  • 8. 
    The time from when pathogen first enters the body and begins to multiply, until symptoms first appear is the
    • A. 

      Prodromal stage

    • B. 

      Convalescent stage

    • C. 

      Incubation period

    • D. 

      Period of invasion

    • E. 

      All of the above

  • 9. 
    Local edema, swollen lymph nodes, fever, soreness, and abscesses are indications of
    • A. 

      Toxemia

    • B. 

      Inflammation

    • C. 

      Sequelae

    • D. 

      A syndrome

    • E. 

      Latency

  • 10. 
    The principal government agency responsible for rtacking infectious diseases in the USA is
    • A. 

      Centers for Disease Control and Prevention

    • B. 

      World Health Organization

    • C. 

      National Institute of Health

    • D. 

      United States Department of Agriculture

    • E. 

      Infections Control Committee

  • 11. 
    A disease that has a steady frequency over time in a population is
    • A. 

      Epidemic

    • B. 

      Endemic

    • C. 

      Pandemic

    • D. 

      Sporadic

    • E. 

      Chronic

  • 12. 
    The primary, natural habitat of a pathogen where it continues to exist is called the
    • A. 

      Fomite

    • B. 

      Carrier

    • C. 

      Vector

    • D. 

      Reservoir

    • E. 

      Source

  • 13. 
    An inanimate object that harborts and transmits a pathogen is a
    • A. 

      Fomite

    • B. 

      Carrier

    • C. 

      Vector

    • D. 

      Reservoir

    • E. 

      Source

  • 14. 
    Nosocomial infections involve all the following except
    • A. 

      They are only transmitted by medical personell

    • B. 

      They often involve the patients urinary tract and surgical incisions

    • C. 

      The patients resident flora can be the infectious agent

    • D. 

      Escherichia coli and Staphylococci are common infectious agents

    • E. 

      Medical and surgical asepsis help lower their occurrence

  • 15. 
    When would Koch's Postulates be utilized
    • A. 

      To determine the cause of a ptients illeness in a hospital microbiology labe

    • B. 

      To develop a new antibiotic in a pharmaceutical lab

    • C. 

      To determine the cause of a new disease in a microbiology lab

    • D. 

      To formulate a vaccine against a new pathogen in a genetic engineering lab

    • E. 

      Whenever the scientific method is used to investigate a microbiological problem

  • 16. 
    Components of the first line of defense include all of the following except
    • A. 

      The tough cell sheet of the upper epidermis of the skin

    • B. 

      Nasal hairs

    • C. 

      Flushing action of tears and blinking

    • D. 

      Flushing action of urine

    • E. 

      Phagocytic white blood cells

  • 17. 
    Nonspecific chemical defense include
    • A. 

      Lysozyme

    • B. 

      Lactic acid and electrolytes of sweat

    • C. 

      Skins acidic PH and fatty acid

    • D. 

      All of the abvove

  • 18. 
    Which cell type is phagocytotic and can migrate out into body tissues to differentiate inot macrophages
    • A. 

      Basophil

    • B. 

      Eosinophil

    • C. 

      Nuetrophil

    • D. 

      Monocyte

    • E. 

      Lymphocyte

  • 19. 
    Diapedesis is the
    • A. 

      Loss of blood due to hemorhaging

    • B. 

      Production of only red blood cells

    • C. 

      Production of white blood cells

    • D. 

      Plugging of broken vessels to stop bleeding

    • E. 

      Migration of white blood cells from the blood out to the tissue

  • 20. 
    Plasma cells
    • A. 

      Function in cell mediated immunity

    • B. 

      Are derived from T-lymphocytes

    • C. 

      Function in blood clotting

    • D. 

      Produce and secrete antibodies

    • E. 

      All of the above

  • 21. 
    The circulating subastances that affect the hypothalmus and initiate fever are
    • A. 

      Complement

    • B. 

      Interferons

    • C. 

      Leukotrienes

    • D. 

      Pyrogens

    • E. 

      Lysozymes

  • 22. 
    Which is incorrect about complement
    • A. 

      Composed of at least 26 blood protiens

    • B. 

      Only appear in the blood during a response to a pathogen

    • C. 

      Act in a cascade reaction

    • D. 

      Involves a classical pathway

    • E. 

      Involves an alternate pathway

  • 23. 
    The membrane attack stage of the complement cascade involves
    • A. 

      Initiation of the cascade

    • B. 

      Production of inflammatory cytokines

    • C. 

      Ring shaped protein consisting of many C9 proteins, digests holes in bacterial cell membrane and virus envelopes

    • D. 

      Cleaving of C3 to yield C3a and C3b

    • E. 

      C1q binds to surface receptors on a membrane

  • 24. 
    All of the following are types of granulocytes because they have prominent cytoplasmic granules when stained except
    • A. 

      Eosinophils

    • B. 

      Monocytes

    • C. 

      Neutrophils

    • D. 

      Basophils

    • E. 

      They are all granulocytes

  • 25. 
    The contribution of B cells is mainly in
    • A. 

      Inflamation

    • B. 

      Humoral immunity

    • C. 

      Complement activity

    • D. 

      Cell mediated immunity

    • E. 

      Phagocytosis

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