Microbiology Exam Iv - Summer 2011

229 Questions  I  By Stephens on July 20, 2011

  
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1.  The major significance of Koch's work was that
A.
B.
C.
D.
E.
2.  The chemical nature of endotoxins is that of a
A.
B.
C.
D.
3.  A group of interacting serum proteins that provide a nonspecific defense mechanism is
A.
B.
C.
D.
4.  Which of the following may be considered virulence factors?
A.
B.
C.
D.
E.
5.  Which process involves a more rapid synthesis and greatly increased titer of antibody when the immune system is subsequently exposed to the same antigen?
A.
B.
C.
D.
E.
6.  Skin and mucous membranes
A.
B.
C.
D.
E.
7.  Delayed type hypersensitivity primarily involves
A.
B.
C.
D.
8.  Siderophores are bacterial proteins that compete with animal
A.
B.
C.
D.
E.
9.  Autoantibodies cause tissue injury in all the following diseases except
A.
B.
C.
D.
E.
10.  Growth of a parasitic organism in or on the host is referred to as
A.
B.
C.
D.
11.  After secreting antibodies during an immune response, plasma cells then differentiate into memory cells.
A.
B.
12.  Which of the following is a major function of natural killer (NK) cells?
A.
B.
C.
D.
E.
13.  A member of the normal flora that becomes an opportunist if it invades the urinary bladder is
A.
B.
C.
D.
14.  Which event is the process of releasing chemical mediators?
A.
B.
C.
D.
E.
15.  Substances that are recognized as foriegn and provoke immune responses are called
A.
B.
C.
D.
16.  The cytokine produced by animal cells in response to viral infections
A.
B.
C.
D.
17.  The four classic signs and symptoms of inflammation include all the following except
A.
B.
C.
D.
E.
18.  A systemic, sometimes fatal reaction with airway obstruction and circulatory collapse is
A.
B.
C.
D.
E.
19.  The leukocyte described as having a small amount of cytpolasm surrounding a round nucleus is the
A.
B.
C.
D.
20.  Which of the following is NOT a characteristic of inflammation?
A.
B.
C.
D.
E.
21.  Which of the following triggers our nonspecific defense system?
A.
B.
C.
D.
E.
22.  Which of the following is not an event of phagocytosis?
A.
B.
C.
D.
E.
23.  The transfer of antibodies in colostrum is a good example of
A.
B.
C.
D.
24.  In which organism were phagocytes first reported?
A.
B.
C.
D.
25.  Which of the following is true about the role normal flora play in maintaining host health?
A.
B.
C.
D.
E.
26.  Which of the following kinds of protein circulates in the blood and coats the surfaces of microbes to make them more susceptible to engulfment by macrophages?
A.
B.
C.
D.
E.
27.  Avirulent organisms are
A.
B.
C.
D.
28.  Which immunoglobulin class/es can fix complement?
A.
B.
C.
D.
E.
29.  An infection acquired during hospitalization is reffered to as
A.
B.
C.
D.
30.  Typically, adhesins
A.
B.
C.
D.
E.
31.  The beauty of specific immunity is the production of __________ that provides long-lasting protection.
A.
B.
C.
D.
E.
32.  An obligate intracellular pathogen may
A.
B.
C.
D.
33.  An example of genetic variation used in pathogen survival may be
A.
B.
C.
D.
E.
34.  Pyrogens are
A.
B.
C.
D.
35.  People who carry and may spread pathogenic organisms without any overt symptoms of illness are called
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B.
C.
D.
36.  The complement pathway that requires antibodies to be activated is the
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B.
C.
D.
37.  A symptom is a(n)
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B.
C.
D.
E.
38.  The microorganisms that are regularly found in or on the body, yet do no apparent  harm are called
A.
B.
C.
D.
39.  T cells primarily are responsible for
A.
B.
C.
D.
40.  During incubation and convalescence a person may still spread infectious organisms.
A.
B.
41.  Which is not a component of innate immunity?
A.
B.
C.
D.
42.  The resident microbial population of the human fetus is
A.
B.
C.
D.
43.  A vaccination is a good example of
A.
B.
C.
D.
44.  Which of the following is a phagocytic cell found in the human body?
A.
B.
C.
D.
45.  Which of the following is one of the body's first lines of defense against infection?
A.
B.
C.
D.
E.
46.  Each of the following are physical barriers to pathogens except
A.
B.
C.
D.
E.
47.  Which of the following are referred to as mononuclear phagocytes?
A.
B.
C.
D.
48.  Diseases that cause long-term or permanent damage leave
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B.
C.
D.
E.
49.  The science that deals with when diseases occur and how they are transmitted is called
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B.
C.
D.
E.
50.  An epidemic that spreads worldwide is called a(n)
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B.
C.
D.
51.  __________ carriers are shedding and transmitting pathogen while they are recovering from an infectious disease.
A.
B.
C.
D.
E.
52.  Which of the following is not a method of adhesion?
A.
B.
C.
D.
E.
53.  The spread of toxin via the circulation is called
A.
B.
C.
D.
54.  The portal of entry
A.
B.
C.
D.
E.
55.  Endotoxins are
A.
B.
C.
D.
E.
56.  Infection always leads to disease.
A.
B.
57.  The complex resulting from complement activity that leads to cell lysis is the
A.
B.
C.
D.
58.  Which of the following exhibits the highest phagocytic activity?
A.
B.
C.
D.
E.
59.  Diseases that can be transmitted from one person to another are termed
A.
B.
C.
D.
E.
60.  The first step in the establishment of infection is that the organism must
A.
B.
C.
D.
61.  The idea that communicable diseases were caused by the passage of living things from one person to another was first put forth by
A.
B.
C.
D.
62.  MHC molecules are found on each of the following cells except
A.
B.
C.
D.
E.
63.  The two main functions of the lymphatic system are
A.
B.
C.
D.
E.
64.  Antibodies are __________.
A.
B.
C.
D.
E.
65.  When an infected person is in the incubation period, that person cannot transmit the pathogen to others.
A.
B.
66.  Which is/are true about viruses?
A.
B.
C.
D.
E.
67.  Which of the following is associated with contact dermatitis?
A.
B.
C.
D.
E.
68.  Which is not a component of innate immunity?
A.
B.
C.
D.
69.  The complement pathway that is activated by mannan binding lectins is the 
A.
B.
C.
D.
70.  The secondary response to an antigen is faster and bigger than the primary response.
A.
B.
71.  The basic function of T cells is to identify and destroy invaders in our __________.
A.
B.
C.
D.
E.
72.  High concentrations of some bacteria are necessary for successful invasion because only at high density are their virulence genes expressed.
A.
B.
73.  Inflammation responses are orchestrated by the immune system and are part of the body's third line of defense.
A.
B.
74.  Which of the following compounds are mast cells specialized to secrete?
A.
B.
C.
D.
E.
75.  Allografts
A.
B.
C.
D.
E.
76.  Which of the following may inhibit the activity of normal flora and allow pathogens to become established?
A.
B.
C.
D.
77.  All blood cells originate from the
A.
B.
C.
D.
78.  The humoral immune response involves the manufacture and use of 
A.
B.
C.
D.
79.  The response of the immune system the second time an invader is encountered is called
A.
B.
C.
D.
80.  The transfer of antibodies from breast milk to an infant is an example of __________ immunity.
A.
B.
C.
D.
E.
81.  Which of the following is the endotoxin?
A.
B.
C.
D.
E.
82.  Which of the following is/are true about endotoxins?
A.
B.
C.
D.
E.
83.  A person with O type blood
A.
B.
C.
D.
E.
84.  Transient microbiota differ from normal microbiota because transient microbiota
A.
B.
C.
D.
E.
85.  The number of organisms necessary to insure infection is termed the
A.
B.
C.
D.
86.  T cells and B cells are manufactured in the
A.
B.
C.
D.
87.  Nonspecific resistance is
A.
B.
C.
D.
E.
88.  A researcher detects interferon in a laboratory rat and concludes that __________.
A.
B.
C.
D.
E.
89.  The interaction of all organisms within a biological community is called a(n)
A.
B.
C.
D.
90.  Which of the following are antigen-presenting cells?
A.
B.
C.
D.
91.  The affect of "good" microbes against invading microbes is called
A.
B.
C.
D.
E.
92.  Organisms that are found together and interact on a more or less permanent basis are in a relationship termed
A.
B.
C.
D.
93.  A diet high in meat leads to a population of normal flora with an increased number of
A.
B.
C.
D.
E.
94.  Which white blood cells comprise 3-7% of circulating WBC's, are phagocytic and can migrate out into body tissues to differentiate into macrophages?
A.
B.
C.
D.
E.
95.  Each of the following can result in acquired immune deficiencies except
A.
B.
C.
D.
E.
96.  If the thymus fails to develop,
A.
B.