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Which of the following immunodeficiency disorders could possibly be treated or prevented by gene therapy during the embryological stage?


A) X-linked agammaglobulinemia (XLA)
B) AIDS
C) Asthma
D) None of these disorders can be treated by gene therapy during the embryological stage.

E) A) and C)
F) None of the above

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All of the following are outward signs of inflammation EXCEPT


A) redness.
B) swelling.
C) pain.
D) lower temperature.

E) B) and C)
F) All of the above

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Which of the following substances have not been identified as a PAMP?


A) double-stranded DNA
B) double-stranded RNA
C) carbohydrates on the cell walls of bacteria
D) lipids on the cell walls of bacteria
E) proteins on the cell wall of bacteria

F) All of the above
G) B) and C)

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A

Edward Jenner promoted the use of cowpox infection that was very similar to the more dangerous smallpox,as a vaccination to provide patients immunity from future smallpox epidemics.This is an example of


A) passive immunity.
B) active immunity.
C) an inflammatory response that decreased the IgE production and increased T cells.
D) developing high levels of complement.
E) developing high levels of interferon although Jenner did not realize these diseases were viral.

F) A) and B)
G) A) and C)

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B

What are the potential symptoms of a person who is suffering from anaphylactic shock?


A) The smooth muscle of the bronchi may constrict.
B) An increased dilation of the capillaries that can lower the blood pressure.
C) The release of a massive amount of histamine within the blood stream.
D) All of the above are potential symptoms of a person who is suffering from anaphylactic shock.

E) All of the above
F) A) and C)

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The presence of antibodies in a newborn baby is most often due to


A) exposure of the baby to antigens after birth.
B) antibodies that crossed the placenta from the mother's blood.
C) immunity developed after birth.
D) natural immunity developed in the baby before birth.
E) antibodies are inherited from the father.

F) B) and E)
G) B) and C)

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The problem with tissue rejection following organ transplants


A) is due to the tissues being recognized as nonself,and therefore being treated as a foreign substance.
B) can be reduced if the organ donor is a close relative with very similar tissue proteins.
C) can be reduced by administering immunosuppressive drugs.
D) All of the choices are correct.
E) None of these are correct.

F) None of the above
G) B) and E)

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The cell responsible for producing a rapid antibody response against a foreign protein when it is encountered years after the first encounter is a


A) memory B cell.
B) memory T cell.
C) killer T cell.
D) plasma cell.

E) B) and D)
F) B) and C)

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Which of these statements is NOT true about complement?


A) Complement is a complex of plasma proteins that are activated in the presence of pathogens.
B) Complement is required for formation of antigen-antibody complexes.
C) Complement forms holes in bacterial membranes and allows fluid and salts to enter a bacterial cell.
D) Complement attracts phagocytes to the bacterial cell and increases its likelihood of being engulfed.

E) All of the above
F) B) and C)

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Innate immunity is a defense system that becomes fully functional after it has undergone a period of exposure to various pathogens.

A) True
B) False

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Which is NOT part of a description of an antibody molecule?


A) contains two light chains and two heavy chains
B) contains an antigen-binding site on each arm
C) contains a constant and a variable region on each chain
D) forms an X-shaped protein molecule

E) None of the above
F) A) and B)

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D

What specific part of the antibody determines the class of the antibody?


A) variable region of the light chain and heavy chain
B) antigen binding sites
C) constant region
D) All of the above are correct.
E) None of the above are correct.

F) B) and C)
G) A) and E)

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Which line of defense would be the most severely impacted if a person was to suffer 3rd degree burns across the majority of their lower body?


A) innate immunity
B) adaptive immunity
C) production of T & B cells
D) the production of complements and interferons

E) B) and D)
F) A) and C)

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If a person is bitten by a highly venomous snake and receives a dose of venom sufficient to kill several people,that person does not have the time to build up his immunity over the next week to neutralize the venom.However,hospitals carry "antivenin" made from injecting horses with small-to-larger dosages of snake venom,and then harvesting the antibodies from the horse plasma.This is an example of


A) passive immunity.
B) active immunity.
C) developing an inflammatory response to increase the IgG production.
D) receiving high levels of complement.
E) receiving high levels of interferon.

F) A) and B)
G) C) and E)

Correct Answer

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Which of the following statements about B cells is true?


A) B cells develop and mature in the bone marrow.
B) B cells carry receptor molecules on their cell surfaces.
C) B cells change into plasma cells after encountering an antigen and then produce antibodies.
D) Some B cells become memory cells.
E) All of the above are true.

F) A) and D)
G) A) and E)

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Which type of immunity is characterized by the production of receptors that will bind to specific antigens?


A) adaptive
B) innate
C) both adaptive and innate
D) neither adaptive or innate

E) A) and D)
F) All of the above

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Which of the following organisms is helping scientists better understand the evolution of the immune system because they have a unique feature during their lifecycle?


A) cellular slime molds
B) B cells
C) archaea
D) planaria
E) viruses

F) B) and D)
G) A) and B)

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Interferon is a protein that binds to the receptors of non-infected cells causing them to produce substances that interfere with viral replication.

A) True
B) False

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Which of the following treatments can benefit from the use of monoclonal antibodies?


A) Determining if a woman is pregnant or not.
B) Diagnosis of respiratory tract infections in young children.
C) Detection and treatment of various forms of breast cancer.
D) All of these treatments can benefit from the use of monoclonal antibodies.

E) B) and D)
F) A) and B)

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Allergies are hypersensitivities to substances that ordinarily would do no harm to the body.

A) True
B) False

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