Question 1

Which of the following is a reason why fever is considered a defense mechanism?

Accepted Answer

A)   Fever inactivates (kills)  some viruses.
B)   Fever speeds up the rate of phagocytosis.
C)   Fever reduces the iron level in the blood, thereby retarding the growth of some bacteria.
D)   Fever kills some bacteria.
E)   All of the answer choices are correct.F) C) and E)
G) A) and B)

Question 2

A molecule that stimulates an immune system reaction by B cells and T cells is termed a(n)

Accepted Answer

A)   antibody.
B)   antigen.
C)   substrate.
D)   phagocyte.
E)   complement protein.F) A) and E)
G) A) and B)

Question 3

Why do lymph nodes often become swollen during an infection?

Accepted Answer

A)   T cells reproduce in lymph nodes after being exposed to pathogens.
B)   B cells reproduce in lymph nodes after being exposed to pathogens.
C)   Macrophages move to lymph nodes after engulfing pathogens.
D)   Cytotoxic T cells attack pathogens in the lymph nodes, triggering inflammation.
E)   Vasodilation increases blood flow in the lymph nodes.F) A) and B)
G) A) and C)

Question 4

If asked to sort cards into boxes marked "active immunity" and "passive immunity," a card saying what would go into the "passive immunity" box?

Accepted Answer

A)   antibodies produced from a vaccine, or a person receiving an injection of antibodies
B)   a fetus acquiring antibodies through the placenta, or a person receiving an injection of antibodies
C)   a person receiving an injection of antibodies
D)   a fetus acquiring antibodies through the placenta
E)   antibodies produced from a vaccineF) B) and E)
G) D) and E)

Question 5

Which can be a target of autoimmune disease but is not considered to be a major part of the immune system itself?

Accepted Answer

A)   thymus
B)   bone marrow
C)   spleen
D)   pancreas
E)   lymph nodeF) A) and B)
G) C) and D)

Question 6

If you transfuse type AB blood into a patient with type A blood,the patient will raise antibodies against the B antigen on the donor's blood,but will not raise antibodies against the A antigen.Why not?

Accepted Answer

A)   B and T cells that recognize the A antigen will have been removed by clonal deletion.
B)   Antibodies that recognize the A antigen will have been removed by the spleen.
C)   Antibodies that recognize the A antigen will have been removed by the bone marrow.
D)   Macrophages will not present the A antigen to T cells.
E)   Recombination of the gene for antibodies cannot produce self-reactive clones.F) A) and B)
G) A) and C)

Question 7

Lymphatic capillaries help to recycle the contents of blood plasma,thus helping maintain homeostasis in the circulatory system.

Accepted Answer

A) True 
 B)False

Question 8

A preparation that "teaches" the immune system to recognize a disease-causing agent without actually causing disease is termed a(n)

Accepted Answer

A)   antibiotic.
B)   sulfa drug.
C)   analgesic.
D)   vaccination.
E)   injection.F) A) and B)
G) A) and C)

Question 9

A vaccine could be prepared against a virus by allowing a patient to breathe viral coat proteins.This primary response would allow for a later,strong secondary immune response to the virus.

Accepted Answer

A) True 
 B)False

Question 10

A cell that does not circulate in blood,but instead settles in tissues near the skin and in the digestive tract,producing and releasing histamine when tissue is damaged is a(n)

Accepted Answer

A)   basophil.
B)   mast cell.
C)   osteocyte.
D)   macrophage.
E)   T cell.F) A) and D)
G) None of the above B

Question 11

A Y-shaped protein that proliferates in response to a specific antigen and recognizes these antigens is

Accepted Answer

A)   interferon.
B)   an antibody.
C)   complement.
D)   a phagocyte.
E)   a B cell.F) A) and B)
G) A) and D) B

Question 12

Special cells produced by the immune system that are progeny of properly stimulated B cells and are antibody-producing factories are

Accepted Answer

A)   cytotoxic T cells.
B)   helper T cells.
C)   plasma cells.
D)   macrophages.
E)   memory cells.F) None of the above
G) C) and D)

Question 13

B cells and T cells are

Accepted Answer

A)   basophils.
B)   monocytes.
C)   lymphocytes.
D)   eosinophils.
E)   neutrophils.F) None of the above
G) C) and D)

Question 14

Administering antivenom is a form of active immunity.

Accepted Answer

A) True 
 B)False  False

Question 15

Fever is part of humoral immunity since the temperature of the body is controlled from the bone marrow.

Accepted Answer

A) True 
 B)False

Question 16

In a process called _____,an army of plasma cells and memory cells are produced from properly stimulated B cells.

Accepted Answer

A)   conjugation
B)   meiotic regeneration
C)   recombination
D)   clonal selection
E)   genetic shufflingF) C) and D)
G) B) and D)

Question 17

A disease-causing agent that does not usually infect and cause disease in a person with a healthy immune system is termed a(n)

Accepted Answer

A)   pathogen.
B)   subtle pathogen.
C)   secondary pathogen.
D)   opportunistic pathogen.
E)   unlikely pathogen.F) A) and C)
G) C) and D)

Question 18

Innate immune responses involve antibodies.

Accepted Answer

A) True 
 B)False

Question 19

If a tumor metastasizes,some of its cells move to another part of the body.Doctors often look in lymph nodes near a tumor for signs of metastasis.Why might cancer cells be found in lymph nodes?

Accepted Answer

A)   The tumor started in the lymph node.
B)   The lymphatic system collects fluids and cells from tissues.
C)   White blood cells are formed in lymph nodes in response to the tumor.
D)   The tumor is recognized as a foreign antigen and is being attacked.
E)   The tumor cells may have moved from the blood into the lymph with the plasma.F) C) and D)
G) A) and B)

Question 20

T cells direct humoral immunity while B cells govern cell-mediated immune reactions.

Accepted Answer

A) True 
 B)False

Exam 34: The Immune System

Which of the following is a reason why fever is considered a defense mechanism?

Correct AnswerverifiedShow Answer

A molecule that stimulates an immune system reaction by B cells and T cells is termed a(n)

Correct AnswerverifiedShow Answer

Why do lymph nodes often become swollen during an infection?

Correct AnswerverifiedShow Answer

If asked to sort cards into boxes marked "active immunity" and "passive immunity," a card saying what would go into the "passive immunity" box?

Correct AnswerverifiedShow Answer

Which can be a target of autoimmune disease but is not considered to be a major part of the immune system itself?

Correct AnswerverifiedShow Answer

If you transfuse type AB blood into a patient with type A blood,the patient will raise antibodies against the B antigen on the donor's blood,but will not raise antibodies against the A antigen.Why not?

Correct AnswerverifiedShow Answer

Lymphatic capillaries help to recycle the contents of blood plasma,thus helping maintain homeostasis in the circulatory system.

Correct AnswerverifiedShow Answer

A preparation that "teaches" the immune system to recognize a disease-causing agent without actually causing disease is termed a(n)

Correct AnswerverifiedShow Answer

A vaccine could be prepared against a virus by allowing a patient to breathe viral coat proteins.This primary response would allow for a later,strong secondary immune response to the virus.

Correct AnswerverifiedShow Answer

A cell that does not circulate in blood,but instead settles in tissues near the skin and in the digestive tract,producing and releasing histamine when tissue is damaged is a(n)

Correct AnswerverifiedB

A Y-shaped protein that proliferates in response to a specific antigen and recognizes these antigens is

Correct AnswerverifiedB

Special cells produced by the immune system that are progeny of properly stimulated B cells and are antibody-producing factories are

Correct AnswerverifiedShow Answer

B cells and T cells are

Correct AnswerverifiedShow Answer

Administering antivenom is a form of active immunity.

Correct AnswerverifiedFalse

Fever is part of humoral immunity since the temperature of the body is controlled from the bone marrow.

Correct AnswerverifiedShow Answer

In a process called _____,an army of plasma cells and memory cells are produced from properly stimulated B cells.

Correct AnswerverifiedShow Answer

A disease-causing agent that does not usually infect and cause disease in a person with a healthy immune system is termed a(n)

Correct AnswerverifiedShow Answer

Innate immune responses involve antibodies.

Correct AnswerverifiedShow Answer

If a tumor metastasizes,some of its cells move to another part of the body.Doctors often look in lymph nodes near a tumor for signs of metastasis.Why might cancer cells be found in lymph nodes?

Correct AnswerverifiedShow Answer

T cells direct humoral immunity while B cells govern cell-mediated immune reactions.

Correct AnswerverifiedShow Answer

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False

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