Microbiology Exam Iv - Summer 2011

229 Questions  I  By Stephens

  
Changes are done, please start the quiz.


Question Excerpt

Removing question excerpt is a premium feature

Upgrade and get a lot more done!
1.  Organisms that are found together and interact on a more or less permanent basis are in a relationship termed
A.
B.
C.
D.
2.  Which of the following is true about the role normal flora play in maintaining host health?
A.
B.
C.
D.
E.
3.  Pathogenic microbes that cause disease in healthy people are called
A.
B.
C.
D.
E.
4.  A needlestick is an example of which portal of entry?
A.
B.
C.
D.
E.
5.  Which of the following is the endotoxin?
A.
B.
C.
D.
E.
6.  A relationship in which one partner benefits and the other is unaffected is termed
A.
B.
C.
D.
7.  Which process involves antibodies covering surface receptors on a virus or toxin molecule thereby disrupting their activity?
A.
B.
C.
D.
E.
8.  How long after initiation of a primary response do signifiant amounts of antibody appear in the blood?
A.
B.
C.
D.
9.  Substances that are recognized as foriegn and provoke immune responses are called
A.
B.
C.
D.
10.  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.
11.  Regarding a mismatch of either the Rh antigen or the AB antigen both
A.
B.
C.
D.
12.  Which of the following is a phagocytic cell found in the human body?
A.
B.
C.
D.
13.  The affect of "good" microbes against invading microbes is called
A.
B.
C.
D.
E.
14.  The immunoglobulin/s found on the surface of B cells is/are
A.
B.
C.
D.
E.
15.  The microorganisms that are regularly found in or on the body, yet do no apparent  harm are called
A.
B.
C.
D.
16.  The production of interferon will protect the host cell from a viral infection.
A.
B.
17.  A systemic, sometimes fatal reaction with airway obstruction and circulatory collapse is
A.
B.
C.
D.
E.
18.  Autoantibodies cause tissue injury in all the following diseases except
A.
B.
C.
D.
E.
19.  During phagocytosis, intracellular digestion begins as soon as the phagosome is formed
A.
B.
20.  The leukocyte responsible for adaptive immunity is the
A.
B.
C.
D.
21.  The immunoglobulin that is important in hypersensitivity reactions is
A.
B.
C.
D.
22.  An epidemic that spreads worldwide is called a(n)
A.
B.
C.
D.
23.  If the thymus fails to develop,
A.
B.
C.
D.
E.
24.  Which is not a component of innate immunity?
A.
B.
C.
D.
25.  Each of the following are physical barriers to pathogens except
A.
B.
C.
D.
E.
26.  Which of the following is not a granulocyte?
A.
B.
C.
D.
27.  Interferons function to make cells
A.
B.
C.
D.
28.  An obligate intracellular pathogen may
A.
B.
C.
D.
29.  Nonspecific resistance is
A.
B.
C.
D.
E.
30.  C5a peptidase
A.
B.
C.
D.
E.
31.  The number of organisms necessary to insure infection is termed the
A.
B.
C.
D.
32.  Each of the following can result in acquired immune deficiencies except
A.
B.
C.
D.
E.
33.  Bacteria may survive phagocytosis by
A.
B.
C.
D.
E.
34.  The cytokine produced by animal cells in response to viral infections
A.
B.
C.
D.
35.  The only class of antibody that can cross the placenta is
A.
B.
C.
D.
36.  Which is mismatched?
A.
B.
C.
D.
E.
37.  The spread of toxin via the circulation is called
A.
B.
C.
D.
38.  Which of the following statements about antibodies is NOT true?
A.
B.
C.
D.
E.
39.  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.
40.  Complement proteins assist the immune response by __________.
A.
B.
C.
D.
E.
41.  A symptom is a(n)
A.
B.
C.
D.
E.
42.  Infection always leads to disease.
A.
B.
43.  The major significance of Koch's work was that
A.
B.
C.
D.
E.
44.  Transient microbiota differ from normal microbiota because transient microbiota
A.
B.
C.
D.
E.
45.  Pyrogens are
A.
B.
C.
D.
46.  Which of the following is involved in specific resistance (immunity)?
A.
B.
C.
D.
E.
47.  Diapedesis is the
A.
B.
C.
D.
E.
48.  The virulence factors of a pathogen are established by how strong or weak a patient's body defenses are at the time of infection.
A.
B.
49.  Microbes may evade host defensive responses by
A.
B.
C.
D.
E.
50.  Growth of a parasitic organism in or on the host is referred to as
A.
B.
C.
D.
51.  Inflammation responses are orchestrated by the immune system and are part of the body's third line of defense.
A.
B.
52.  Which of the following statements about exotoxins is generally NOT true?
A.
B.
C.
D.
E.
53.  A relationship in which one partner benefits and the other is harmed is termed
A.
B.
C.
D.
54.  Under normal circumstances, the microbiota of the skin is kept in check by
A.
B.
C.
D.
55.  A researcher detects interferon in a laboratory rat and concludes that __________.
A.
B.
C.
D.
E.
56.  Eczema is an autoimmune disorder.
A.
B.
57.  Nosocomial infections involve all the following except:
A.
B.
C.
D.
E.
58.  Which of the following is a major function of natural killer (NK) cells?
A.
B.
C.
D.
E.
59.  Which class of antibody accounts for the bulk of the circulating antibody?
A.
B.
C.
D.
60.  The "voices" of a cell are
A.
B.
C.
D.
61.  A commensal bacterium
A.
B.
C.
D.
E.
62.  In Gram-negative bacteria, many of the genes required for pathogenicity are
A.
B.
C.
D.
E.
63.  All of the following occur during inflammation.  What is the first step?
A.
B.
C.
D.
E.
64.  The two main functions of the lymphatic system are
A.
B.
C.
D.
E.
65.  All of the following are methods of penetrating and/or avoiding the host EXCEPT
A.
B.
C.
D.
E.
66.  Which of the following may be considered virulence factors?
A.
B.
C.
D.
E.
67.  A disease is an infection that impairs the normal state of health.
A.
B.
68.  The leukocyte that contains histamine is the
A.
B.
C.
D.
69.  The response of the immune system the second time an invader is encountered is called
A.
B.
C.
D.
70.  T cells primarily are responsible for
A.
B.
C.
D.
71.  The infectious dose of most pathogens is about equal.
A.
B.
72.  What kinds of cells wander the interstitial fluid eating whatever bacteria and virus-infected cells they encounter and recognize?
A.
B.
C.
D.
E.
73.  Which of the following is NOT a characteristic of inflammation?
A.
B.
C.
D.
E.
74.  Antibodies
A.
B.
C.
D.
E.
75.  Anaphylactic shock is an example of an __________.
A.
B.
C.
D.
E.
76.  Which of the following is NOT a chemical factor to protect the skin and mucous membranes from infection?
A.
B.
C.
D.
E.
77.  Which of the following cytokines is most antiviral in its action?
A.
B.
C.
D.
78.  Which of the following is involved in fighting parasitic infections?
A.
B.
C.
D.
E.
79.  Which of the following members of the normal flora inhibits the growth of Corynebacterium diphtheriae by producing hydrogen peroxide?
A.
B.
C.
D.
80.  Delayed type hypersensitivity primarily involves
A.
B.
C.
D.
81.  The first host response to a nonspecific tissue injury is described as
A.
B.
C.
D.
82.  The complement pathway that requires antibodies to be activated is the
A.
B.
C.
D.
83.  A vaccination is a good example of
A.
B.
C.
D.
84.  Each of the following are inoculation of normal biota to a newborn except
A.
B.
C.
D.
E.
85.  Which event is the process of releasing chemical mediators?
A.
B.
C.
D.
E.
86.  Siderophores are bacterial proteins that compete with animal
A.
B.
C.
D.
E.
87.  Botulism is caused by an exotoxin, therefore it could be easily prevented by
A.
B.
C.
D.
E.
88.  Attributes of an organism that promote pathogenicity are called
A.
B.
C.
D.
89.  When you cut yourself, the damaged cells immediately release which of the following chemical alarm signals?
A.
B.
C.
D.
E.
90.  The most numerous WBC's that have multilobed nuclei and are very phatocytic are
A.
B.
C.
D.
E.
91.  A __________ is an infection indigenous to animals that can, on occasion, be transmitted to humans
A.
B.
C.
D.
E.
92.  Why do diseases involving widespread infection usually result in a fever?
A.
B.
C.
D.
E.
93.  Which of the following are antigen-presenting cells?
A.
B.
C.
D.
94.  A diet high in meat leads to a population of normal flora with an increased number of
A.
B.
C.
D.
E.
95.  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.
96.  Which of the following is a fomite?
A.
B.
C.
D.
E.
97.  Which of the following is associated with contact dermatitis?
A.
B.
C.
D.
E.
98.  The lack of susceptibility to diseases of other species in humans may be due to the
A.
B.
C.
D.
99.  The potential for hemolytic disease of the newborn occurs when
A.
B.
C.
D.
E.
100.  Allergic reactions mainly involve
A.
B.
C.
D.
101.  What is a primary immune response?
A.
B.
C.
D.
E.
102.  Which lymphocytes lack specificity for antigen and are cells that attack cancer cells and virus-infected cells?
A.
B.
C.
D.
E.
103.  Inanimate objects capable of transferring infectious disease agents are
A.
B.
C.
D.
104.  Antibodies are __________.
A.
B.
C.
D.
E.
105.  Tears protect the eyes by
A.
B.
C.
D.
E.
106.  Antibodies that have arisen in the blood plasma without any obvious or deliberate stimulus are called
A.
B.
C.
D.
107.  Which of the following compounds are mast cells specialized to secrete?
A.
B.
C.
D.
E.
108.  The basic function of T cells is to identify and destroy invaders in our __________.
A.
B.
C.
D.
E.
109.  Which of the following would be considered a sign of a disease?
A.
B.
C.
D.
110.  When an individual's immune system comes into contact with an appropriate antigenic stimulus during the course of daily activities, this is called
A.
B.
C.
D.
111.  Following digestion of a microorganism by phagocytes, the debris is excreted by
A.
B.
C.
D.
112.  Which is true about superantigens?
A.
B.
C.
D.
E.
113.  Which of the following is not a method of adhesion?
A.
B.
C.
D.
E.
114.  The complex resulting from complement activity that leads to cell lysis is the
A.
B.
C.
D.
115.  Allografts
A.
B.
C.
D.
E.
116.  A disease-causing microorganism or virus is referred to as a(n)
A.
B.
C.
D.
117.  Which of the following triggers our nonspecific defense system?
A.
B.
C.
D.
E.
118.  The initial encounter with an allergen is called the
A.
B.
C.
D.
E.
119.  Avirulent organisms are
A.
B.
C.
D.
120.  Opportunists or opportunistic pathogens
A.
B.
C.
D.
121.  In which organism were phagocytes first reported?
A.
B.
C.
D.
122.  Which is not a component of innate immunity?
A.
B.
C.
D.
123.  Which type of immune response is always disadvantageous to a person?
A.
B.
C.
D.
E.
124.  Type IV hypersensitivity reactions typically peak within
A.
B.
C.
D.
125.  Which of the following members of the normal flora inhibits the growth of bacteria by production of fatty acids from lipids?
A.
B.
C.
D.
E.
126.  __________ carriers are shedding and transmitting pathogen while they are recovering from an infectious disease.
A.
B.
C.
D.
E.
127.  Which of the following statements is true?
A.
B.
C.
D.
128.  The complement pathway that is activated by mannan binding lectins is the 
A.
B.
C.
D.
129.  MHC molecules are found on each of the following cells except
A.
B.
C.
D.
E.
130.  The major categories of hypersensitivities that typically involve a B-cell immunoglobulin response is/are
A.
B.
C.
D.
E.
131.  Exotoxins
A.
B.
C.
D.
E.
132.  Which of the following cell types initiates a secondary immune response?
A.
B.
C.
D.
E.
133.  The symbiotic relationship wherein both partners benefit is termed
A.
B.
C.
D.
134.  When an infectious disease cannot spread in a population because it lacks a significant number of susceptible hosts, the phenomenon is referred to as
A.
B.
C.
D.
135.  The chemical nature of endotoxins is that of a
A.
B.
C.
D.
136.  The secondary response to an antigen is faster and bigger than the primary response.
A.
B.
137.  The beauty of specific immunity is the production of __________ that provides long-lasting protection.
A.
B.
C.
D.
E.
138.  Which of the following types of cells does HIV preferentially infect?
A.
B.
C.
D.
E.
139.  Which of the following definitions is incorrect?
A.
B.
C.
D.
E.
140.  Which of the following may inhibit the activity of normal flora and allow pathogens to become established?
A.
B.
C.
D.
141.  All the following are events of early inflammation except
A.
B.
C.
D.
E.
142.  Macrophages arise from which of the following?
A.
B.
C.
D.
E.
143.  All blood cells originate from the
A.
B.
C.
D.
144.  The humoral immune response involves the manufacture and use of 
A.
B.
C.
D.
145.  Which of the following are referred to as mononuclear phagocytes?
A.
B.
C.
D.
146.  Which of the following exhibits the highest phagocytic activity?
A.
B.
C.
D.
E.
147.  Which of the following is considered an indirect mode of transmission?
A.
B.
C.
D.
148.  A person who is Rh- will have anti-Rh antibodies in their serum from early infancy.
A.
B.
149.  A substance that can elicit an immune response is called a(n)
A.
B.
C.
D.
E.
150.  The portal of entry
A.
B.
C.
D.
E.
151.  If a disease affects only a human and not an animal, then it would be difficult to fulfill Koch's postulate number ___.
A.
B.
C.
D.
152.  All of the following are types of exotoxins EXCEPT
A.
B.
C.
D.
E.
153.  Only Gram-positive bacteria produce exotoxins.
A.
B.
154.  A person who has anti A and anti B serum antibodies will have blood type
A.
B.
C.
D.
E.
155.  Which of the following cell types is specifically responsible for cell-mediated immunity?
A.
B.
C.
D.
E.
156.  High concentrations of some bacteria are necessary for successful invasion because only at high density are their virulence genes expressed.
A.
B.
157.  Diseases that cause long-term or permanent damage leave
A.
B.
C.
D.
E.
158.  The interaction of all organisms within a biological community is called a(n)
A.
B.
C.
D.
159.  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.
160.  All of the following are communicable diseases except
A.
B.
C.
D.
E.
161.  Which of the following is a phagocytic cell found in the human body?
A.
B.
C.
D.
162.  Diseases constantly present in a population are
A.
B.
C.
D.
163.  People who carry and may spread pathogenic organisms without any overt symptoms of illness are called
A.
B.
C.
D.