Microbiology Exam Iv - Summer 2011

229 Questions  I  By Stephens on July 20, 2011

  

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1.  Which event is the process of releasing chemical mediators?
A.
B.
C.
D.
E.
2.  Each of the following are physical barriers to pathogens except
A.
B.
C.
D.
E.
3.  Diseases that can be transmitted from one person to another are termed
A.
B.
C.
D.
E.
4.  Which of the following statements about exotoxins is generally NOT true?
A.
B.
C.
D.
E.
5.  An example of genetic variation used in pathogen survival may be
A.
B.
C.
D.
E.
6.  The complement pathway that is activated by mannan binding lectins is the 
A.
B.
C.
D.
7.  Which of the following statements is true?
A.
B.
C.
D.
8.  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.
9.  A relationship in which one partner benefits and the other is harmed is termed
A.
B.
C.
D.
10.  Which of the following is/are true about endotoxins?
A.
B.
C.
D.
E.
11.  Which of the following are antigen-presenting cells?
A.
B.
C.
D.
12.  Which of the following does NOT contribute to a pathogen's invasiveness?
A.
B.
C.
D.
E.
13.  Which of the following is true about the role normal flora play in maintaining host health?
A.
B.
C.
D.
E.
14.  Nosocomial infections involve all the following except:
A.
B.
C.
D.
E.
15.  Delayed type hypersensitivity primarily involves
A.
B.
C.
D.
16.  The hypersensitivity treatment that stimulates an increase of IgG and T suppressor cells, and a decrease in IgE is known as
A.
B.
C.
D.
E.
17.  Regarding a mismatch of either the Rh antigen or the AB antigen both
A.
B.
C.
D.
18.  Which process involves antibodies covering surface receptors on a virus or toxin molecule thereby disrupting their activity?
A.
B.
C.
D.
E.
19.  Bacteria have siderophores to capture iron; humans counter this by
A.
B.
C.
D.
E.
20.  The transfer of antibodies from breast milk to an infant is an example of __________ immunity.
A.
B.
C.
D.
E.
21.  Which of the following may inhibit the activity of normal flora and allow pathogens to become established?
A.
B.
C.
D.
22.  Which of the following cytokines is most antiviral in its action?
A.
B.
C.
D.
23.  The complement pathway that requires antibodies to be activated is the
A.
B.
C.
D.
24.  A disease-causing microorganism or virus is referred to as a(n)
A.
B.
C.
D.
25.  In multiple sclerosis, autoantibodies attack
A.
B.
C.
D.
E.
26.  A commensal bacterium
A.
B.
C.
D.
E.
27.  Diapedesis is the
A.
B.
C.
D.
E.
28.  T cells and B cells are manufactured in the
A.
B.
C.
D.
29.  The portal of entry
A.
B.
C.
D.
E.
30.  Which of the following is a phagocytic cell found in the human body?
A.
B.
C.
D.
31.  C5a peptidase
A.
B.
C.
D.
E.
32.  All of the following are communicable diseases except
A.
B.
C.
D.
E.
33.  Which lymphocytes lack specificity for antigen and are cells that attack cancer cells and virus-infected cells?
A.
B.
C.
D.
E.
34.  A relationship in which one partner benefits and the other is unaffected is termed
A.
B.
C.
D.
35.  Which of the following would be considered a sign of a disease?
A.
B.
C.
D.
36.  Which of the following is considered an indirect mode of transmission?
A.
B.
C.
D.
37.  The chemical nature of exotoxins is that of a
A.
B.
C.
D.
38.  The two main functions of the lymphatic system are
A.
B.
C.
D.
E.
39.  All blood cells originate from the
A.
B.
C.
D.
40.  The leukocyte responsible for adaptive immunity is the
A.
B.
C.
D.
41.  Which is true about botox?
A.
B.
C.
D.
E.
42.  All of the following are methods of penetrating and/or avoiding the host EXCEPT
A.
B.
C.
D.
E.
43.  Allergic reactions mainly involve
A.
B.
C.
D.
44.  The only class of antibody that can cross the placenta is
A.
B.
C.
D.
45.  The symbiotic relationship wherein both partners benefit is termed
A.
B.
C.
D.
46.  An infection acquired during hospitalization is reffered to as
A.
B.
C.
D.
47.  A researcher detects interferon in a laboratory rat and concludes that __________.
A.
B.
C.
D.
E.
48.  Diseases constantly present in a population are
A.
B.
C.
D.
49.  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.
50.  The body region where a ciliary escalator helps to sweep microbes trapped in mucus away from that body site is the
A.
B.
C.
D.
E.
51.  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.
52.  Antibodies
A.
B.
C.
D.
E.
53.  Eczema is an autoimmune disorder.
A.
B.
54.  Which of the following exhibits the highest phagocytic activity?
A.
B.
C.
D.
E.
55.  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.
56.  A person with O type blood
A.
B.
C.
D.
E.
57.  A transfusion reaction primarily involves
A.
B.
C.
D.
58.  Density-dependent expression of virulence factors is called
A.
B.
C.
D.
59.  The major categories of hypersensitivities that typically involve a B-cell immunoglobulin response is/are
A.
B.
C.
D.
E.
60.  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.
61.  A nosocomial infection is
A.
B.
C.
D.
E.
62.  __________ carriers are shedding and transmitting pathogen while they are recovering from an infectious disease.
A.
B.
C.
D.
E.
63.  The beauty of specific immunity is the production of __________ that provides long-lasting protection.
A.
B.
C.
D.
E.
64.  Fever
A.
B.
C.
D.
E.
65.  Which immunoglobulin class/es can fix complement?
A.
B.
C.
D.
E.
66.  Skin and mucous membranes
A.
B.
C.
D.
E.
67.  Pyrogens are
A.
B.
C.
D.
68.  Which of the following compounds are mast cells specialized to secrete?
A.
B.
C.
D.
E.
69.  Pathogenic microbes that cause disease in healthy people are called
A.
B.
C.
D.
E.
70.  Which of the following is the endotoxin?
A.
B.
C.
D.
E.
71.  Which process involves antibodies coating microorganisms in order to facilitate phagocytosis?
A.
B.
C.
D.
E.
72.  Delayed type hypersensitivity primarily involves
A.
B.
C.
D.
73.  High concentrations of some bacteria are necessary for successful invasion because only at high density are their virulence genes expressed.
A.
B.
74.  Inanimate objects capable of transferring infectious disease agents are
A.
B.
C.
D.
75.  Which of the following is NOT a characteristic of inflammation?
A.
B.
C.
D.
E.
76.  The humoral immune response involves the manufacture and use of 
A.
B.
C.
D.
77.  Which is true about superantigens?
A.
B.
C.
D.
E.
78.  Macrophages arise from which of the following?
A.
B.
C.
D.
E.
79.  An epidemic that spreads worldwide is called a(n)
A.
B.
C.
D.
80.  A symptom is a(n)
A.
B.
C.
D.
E.
81.  Which is not a component of innate immunity?
A.
B.
C.
D.
82.  Avirulent organisms are
A.
B.
C.
D.
83.  Human B lymphocytes mature in an intestinal region called the bursa.
A.
B.
84.  Typically, adhesins
A.
B.
C.
D.
E.
85.  A systemic, sometimes fatal reaction with airway obstruction and circulatory collapse is
A.
B.
C.
D.
E.
86.  Which of the following cell types is specifically responsible for cell-mediated immunity?
A.
B.
C.
D.
E.
87.  All of the following are involved in Type II hypersensitivity except
A.
B.
C.
D.
E.
88.  Complement proteins assist the immune response by __________.
A.
B.
C.
D.
E.
89.  The leukocyte that contains histamine is the
A.
B.
C.
D.
90.  Which of the following is not a granulocyte?
A.
B.
C.
D.
91.  Which of the following is involved in fighting parasitic infections?
A.
B.
C.
D.
E.
92.  A disease is an infection that impairs the normal state of health.
A.
B.
93.  The cytokine produced by animal cells in response to viral infections
A.
B.
C.
D.
94.  Antibodies are __________.
A.
B.
C.
D.
E.
95.  Under normal circumstances, the microbiota of the skin is kept in check by
A.
B.
C.
D.
96.  Botulism is caused by an exotoxin, therefore it could be easily prevented by
A.
B.
C.
D.
E.
97.  All the following are events of early inflammation except
A.
B.
C.
D.
E.
98.  Growth of a parasitic organism in or on the host is referred to as
A.
B.
C.
D.
99.  Fomites are involved in
A.
B.
C.
D.
100.  Siderophores are bacterial proteins that compete with animal
A.
B.
C.
D.
E.