Mbio Exam 3

44 Questions | Total Attempts: 37

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Microbiology Quizzes & Trivia

Questions and Answers
  • 1. 
    What is the body's defenses against pathogens which are present at birth?
    • A. 

      Immunity

    • B. 

      Innate (nonspecific) immunity

    • C. 

      Normal Flora

    • D. 

      Cellular defenses

  • 2. 
    All o fthe following EXCEPT___________ are Mechanical defenses of "flushing"
    • A. 

      Tears

    • B. 

      Urine

    • C. 

      Saliva

    • D. 

      Vaginal Secretions

    • E. 

      Sweat glands

    • F. 

      Upper respiratory (mucous, cilia)

  • 3. 
    Skin is a physical barries because keratin is waterproof
    • A. 

      True

    • B. 

      False

  • 4. 
    The oil glands (for CHEMICAL defense) excrete an oily substance called____.
    • A. 

      Sebum

    • B. 

      Sweat

    • C. 

      Perisalsis

    • D. 

      Ciliosis

  • 5. 
    What is an enzyme that digests bacterial cell walls (peptidoglycan) and is present in: tears, saliva, nasal secreations, and perspiration.
    • A. 

      Microbiota

    • B. 

      Amoeboza

    • C. 

      Enzozyme

    • D. 

      Lysozyme

  • 6. 
    Normal Flora competes with pathogens for nutrients, oxygen, alter pH, etc.
    • A. 

      True

    • B. 

      False

  • 7. 
    T-cells, B-cells, and NK cells are all granulocytes
    • A. 

      True

    • B. 

      False they are lymphocytes

  • 8. 
    Granulocytes have granules in their cytoplasm and a lobed nucleus
    • A. 

      True

    • B. 

      False

  • 9. 
    Leukocytosis is an increase in WBCs
    • A. 

      True

    • B. 

      False

  • 10. 
    Leukopenia is a decrease in WBCs
    • A. 

      True

    • B. 

      False

  • 11. 
    Which of the following are phagocytic cells
    • A. 

      Neutrophils (PNMs)

    • B. 

      Macrophages

    • C. 

      Dendritic cells

    • D. 

      All of the above

  • 12. 
    Inflammation (reddness, swelling, heat) is caused by vasoconstriction
    • A. 

      True

    • B. 

      False it is caused by vasodilation

  • 13. 
    Vasodilation, signaled by histamine, causes anti-histamine
    • A. 

      True

    • B. 

      False

  • 14. 
    Interferons are VIRUS specific not HOST specific
    • A. 

      True

    • B. 

      False

  • 15. 
    The 30 proteins of the Complement System that protect us from infection are produced by the__________
    • A. 

      Kidneys

    • B. 

      Adrenal gland

    • C. 

      Bone marrow

    • D. 

      Liver

  • 16. 
    Cytolysis is the repairing of a cell. (as a result of the complement system)
    • A. 

      True

    • B. 

      False

  • 17. 
    A protein that is made in response to an antigen is a/an___________.
    • A. 

      Defense protein

    • B. 

      Antibody

    • C. 

      Immunoglobin

    • D. 

      Antigen-presenting cell (APC)

  • 18. 
    What is The ability obtained during the life of the individual to produce antibodies and T-cells
    • A. 

      Adaptive Immunity

    • B. 

      Immunity

    • C. 

      Innate Immunity

    • D. 

      None of the Above

  • 19. 
    ____________ is a substance that causes the body to produce antibodies or sensitized T cells
    • A. 

      Antibody Serum

    • B. 

      Immunosol

    • C. 

      Sebum

    • D. 

      Antigen

  • 20. 
    ____________________-genes encoding antigens found on the surface of cells
    • A. 

      MHC-Major histocompatibility complex

    • B. 

      MAC-Membrane attack complex

    • C. 

      AEC-Antigen encoding complex

    • D. 

      None of the above

  • 21. 
    Humoral Immunity is also called antibody-mediated immunity & involves antibody production by B cells; it works well for EXTRACELLULAR pathogens
    • A. 

      True

    • B. 

      False

  • 22. 
    Cell mediated immunity involves direct cell contact, NOT antibody production & is important for INTRACELLULAR pathogens
    • A. 

      True

    • B. 

      False

  • 23. 
    Stem cells that pass through the thymus mature into B-cells
    • A. 

      True

    • B. 

      False

  • 24. 
    Stem cells that pass through the lymphoid organs mature into T-cells
    • A. 

      True

    • B. 

      False

  • 25. 
    Both B-cells & T-cells originate from Stem Cells
    • A. 

      True

    • B. 

      False