7171368
Description
Quiz by Alexandra Bozan, updated more than 1 year ago
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Created by Alexandra Bozan
almost 8 years ago
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Question 1
Question
Genetic characteristics of the human species that protects the body from certain pathogens
Answer
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chemical barriers
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microbial flora
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species resistance
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mechanical barriers
Question 2
Question
An immunoglobulin, or antibody molecule, consists of
Answer
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two heavy and two light polypeptide chains
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four heavy and two light polypeptide chains
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two heavy and four light polypeptide chains
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four heavy and four light polypeptide chains
Question 3
Question
All of the following represent examples of nonspecific immune defenses except
Answer
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species resistance
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phagocytosis
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cell-mediated immunity
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mechanical and chemical barriers
Question 4
Question
The most abundant circulating antibody, the one that normally makes up about 75% of all the antibodies in the blood, is
Answer
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IgG
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IgA
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IgE
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IgM
Question 5
Question
A large antibody with 10 binding sites
Answer
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IgE
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IgD
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IgM
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IgA
Question 6
Question
Which of the following can activate a naive B cell
Answer
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Binding to its specific antibody
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Binding to its specific antigen
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All B cells are activated when an infant is born
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All of the above
Question 7
Question
Which of the following is not a characteristic of inflammation?
Answer
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Heat
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Redness
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Swelling
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Pain
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All of the above are characteristics of inflammation.
Question 8
Question
15% of the lymphocytes are made of these nonspecific killer cells:
Answer
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helper T cells
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cytotoxic T cells
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B cells
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NK cells
Question 9
Question
The amount of antibodies in a person’s blood is expressed as:
Answer
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toxoid
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titer
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both toxoid and titer
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none of the above
Question 10
Question
The type of immune mechanism that provides a general defense by acting against anything recognized as “not self” is called
Answer
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nonspecific immunity
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specific immunity
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adaptive immunity
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acquired immunity
Question 11
Question
The MHC antigen is important in helping the immune system identify [blank_start]self[blank_end] [blank_start]cells[blank_end].
Answer
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self
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cells
Question 12
Question
The complement system can be activated by
Answer
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the binding of complement protein 1 to the complement-binding site on the antibody molecule.
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the binding of complement protein 3 to bacteria or viruses in the presence of properdin.
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nonspecific immune mechanisms
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all of the above
Question 13
Question
In the first stage of their development, B cells are known by following term: plasma B cells.
Answer
- True
- False
Question 14
Question
Complement system is not a chemical barrier
Answer
- True
- False
Question 15
Question
This substance can destroy pathogens by lowering the pH to a level where they cannot function: [blank_start]Hydrochloric[blank_end] [blank_start]acid[blank_end]
Answer
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Hydrochloric
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acid
Question 16
Question
Memory B cells form plasma B cells upon rexposure to same antigen.
Answer
- True
- False
Question 17
Question
The antibody commonly found in tears, saliva and on mucous membranes is [blank_start]IgA[blank_end].
Answer
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IgA
Question 18
Question
Pyrogens play an important role in raising the thermostat and triggering fever.
Answer
- True
- False
Question 19
Question
Specific immunity is controlled by two classes of lymphocytes called [blank_start]T[blank_end] [blank_start]cells[blank_end] and [blank_start]B[blank_end] [blank_start]cells[blank_end].
Answer
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T
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cells
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B
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cells
Question 20
Question
The most numerous type of phagocyte is the [blank_start]neutrophil[blank_end].
Answer
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neutrophil
Question 21
Question
John was immunized against most of the childhood diseases. What type of immunity results:
Answer
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artificially acquired active immunity
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passive immunity
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nonspecific immunity
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general immunity
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This is not considered an example of immunity
Question 22
Question
Also known as killer lymphocytes
Answer
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NK cells
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cytotoxic T cell
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Prostaglandins
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Platelets
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NK cells and cytotoxic T cell
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