Question 1

The substance that when activated triggers a chain reaction that punctures bacterial cell membranes is

Accepted Answer

A)   histamine.
B)   interleukin.
C)   plasma.
D)   complement protein.
E)   epinephrine.F) A) and D)
G) A) and E)

Question 2

Rh incompatibility is due to an immune reaction to what by a pregnant woman?

Accepted Answer

A)   a self antigen on red blood cells
B)   a foreign antibody on red blood cells
C)   a foreign antigen on red blood cells
D)   a self antibody on red blood cells
E)   No answer is correct.F) A) and C)
G) C) and D)

Question 3

What would occur if the lymphatic system was absent?

Accepted Answer

A)   Cancer would not spread as quickly because cancerous cells would not be transported by the lymphatic system, nor stored in lymph nodes.
B)   Bacteria located in the body would not be destroyed if they were not in the blood.
C)   Viruses located in the body would not be destroyed if they were not in the blood.
D)   Cancer cells located in the body would not be destroyed if they were not in the blood.
E)   All answers are correct.F) A) and B)
G) D) and E)

Question 4

The type of T cell that is primarily responsible for the production of antibodies is the plasma cell.

Accepted Answer

A) True 
 B)False

Question 5

If you were trying to block an antibody that was causing an autoimmune disease in a patient,in the antibody you would want to find a way to cover and inactivate the

Accepted Answer

A)   hinge region.
B)   variable region.
C)   constant region.
D)   base of the antibody molecule.
E)   heavy chain only.F) A) and D)
G) B) and C)

Question 6

Since fever is not always present,it is an example of adaptive immunity.

Accepted Answer

A) True 
 B)False

Question 7

What is not part of the innate defense response?

Accepted Answer

A)   cilia that sweep bacteria out of the respiratory tract
B)   the process of inflammation
C)   antibody production
D)   fever production
E)   the complement protein systemF) C) and D)
G) A) and B)

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)   virus.
C)   antiviral.
D)   vaccination.
E)   injection.F) A) and B)
G) A) and C)

Question 9

Which is an example of active immunity?

Accepted Answer

A)   a fetus acquiring antibodies through the placenta, or a person receiving an injection of antibodies
B)   antibodies produced from a vaccine, or a person receiving an injection of antibodies
C)   antibodies produced from a vaccine, antibodies produced when the flu strikes
D)   a fetus acquiring antibodies through the placenta, antibodies produced when the flu strikes
E)   a person receiving an injection of antibodies, antibodies produced when the flu strikesF) C) and D)
G) All of the above

Question 10

A patient can have antibodies against many strains of HIV.Which is the main reason that an effective vaccine has not been produced for the HIV virus that causes AIDS?

Accepted Answer

A)   The virus reproduces very rapidly.
B)   It takes two to three months to raise antibodies against the virus.
C)   The virus is transmitted sexually.
D)   The virus mutates rapidly, changing its outer coat.
E)   The virus is not technically alive.F) A) and E)
G) A) and C)

Question 11

Histamine triggers vasodilation and leakiness in blood vessels during inflammation.This would be beneficial in fighting an infection by a pathogen because it would lead to

Accepted Answer

A)   increased number of white blood cells only.
B)   increased migration of white blood cells to site of infection only.
C)   both increased number of white blood cells and their migration to site of infection.
D)   increased accessibility of the pathogen to the blood only.
E)   both increased accessibility of the pathogen to the blood and number of white blood cells.F) C) and D)
G) B) and C)

Question 12

Which is an example of passive immunity?

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

Question 13

Fever is considered a defense mechanism because it

Accepted Answer

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

Question 14

The second time that an immune system sees an antigen,a secondary immune reaction will take place.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following occurred during the coevolution of humans and pathogens that cause disease?

Accepted Answer

A)   The pathogens produce substances that suppress our immune system.
B)   Our immune system can destroy the pathogens before they cause disease.
C)   Pathogens have become less infectious.
D)   Our immune system no longer sees the pathogen as foreign.
E)   Pathogens have developed their own immune system to counteract ours.F) All of the above
G) None of the above

Question 16

You would know that a viral infection is ongoing in a body if you detect high levels of

Accepted Answer

A)   histamine.
B)   adrenaline.
C)   complement protein.
D)   interferon.
E)   epinephrine.F) B) and C)
G) All of the above

Question 17

If you see cytotoxic T cells,you know that a humoral response is underway.

Accepted Answer

A) True 
 B)False

Question 18

Which description is correctly matched with its term?

Accepted Answer

A)   Innate defenses-able to defend against any pathogen
B)   Adaptive immunity-able to defend against any pathogen
C)   Innate defenses-unable to fight cancerous cells
D)   Adaptive immunity-unable to fight cancerous cells
E)   All answers are correct.F) None of the above
G) C) and D)

Question 19

In the section "Investigating Life: The Hidden Cost of Hygiene," the hypothesis states that people who have

Accepted Answer

A)   more worm infections will have an overactive immune system.
B)   better hygiene and are cleaner will have more worm infections.
C)   better hygiene and are cleaner will have a weaker immune system.
D)   fewer worm infections will have an overactive immune system.
E)   better hygiene and are cleaner will have fewer worm infections.F) None of the above
G) A) and E)

Question 20

HIV-positive people track the progress of their disease with blood tests that measure the number of

Accepted Answer

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

Exam 29: The Immune System

HIV-positive people track the progress of their disease with blood tests that measure the number of

Correct AnswerverifiedShow Answer

Which description is correctly matched with its term?

Correct AnswerverifiedShow Answer

Histamine triggers vasodilation and leakiness in blood vessels during inflammation.This would be beneficial in fighting an infection by a pathogen because it would lead to

Correct AnswerverifiedShow Answer

What is not part of the innate defense response?

Correct AnswerverifiedShow Answer

What would occur if the lymphatic system was absent?

Correct AnswerverifiedShow Answer

If you were trying to block an antibody that was causing an autoimmune disease in a patient,in the antibody you would want to find a way to cover and inactivate the

Correct AnswerverifiedShow Answer

If you see cytotoxic T cells,you know that a humoral response is underway.

Correct AnswerverifiedShow Answer

Since fever is not always present,it is an example of adaptive immunity.

Correct AnswerverifiedShow Answer

Which of the following occurred during the coevolution of humans and pathogens that cause disease?

Correct AnswerverifiedShow Answer

You would know that a viral infection is ongoing in a body if you detect high levels of

Correct AnswerverifiedShow Answer

Which is an example of passive immunity?

Correct AnswerverifiedShow Answer

Rh incompatibility is due to an immune reaction to what by a pregnant woman?

Correct AnswerverifiedShow Answer

A patient can have antibodies against many strains of HIV.Which is the main reason that an effective vaccine has not been produced for the HIV virus that causes AIDS?

Correct AnswerverifiedShow Answer

Fever is considered a defense mechanism because it

Correct AnswerverifiedShow Answer

The second time that an immune system sees an antigen,a secondary immune reaction will take place.

Correct AnswerverifiedShow Answer

In the section "Investigating Life: The Hidden Cost of Hygiene," the hypothesis states that people who have

Correct AnswerverifiedShow Answer

The type of T cell that is primarily responsible for the production of antibodies is the plasma cell.

Correct AnswerverifiedShow Answer

The substance that when activated triggers a chain reaction that punctures bacterial cell membranes is

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

Which is an example of active immunity?

Correct AnswerverifiedShow Answer

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