Question 1

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)  artificial selectionF) All of the above
G) A) and E)

Question 2

Every year the common flu vaccine is designed to protect against three different strains of the influenza virus.Why do scientists typically have to make a new vaccine every year?

Accepted Answer

A)  because our bodies develop resistance to the vaccine and it becomes less effective
B)  because the virus develops resistance to the vaccine
C)  because the virus cannot mutate into new strains
D)  because people change their habits each year and become susceptible to different strains of the virus
E)  because the common influenza virus can come from many species of animals,including cats and dogsF) All of the above
G) B) and D)

Question 3

Many parasites are too large to be engulfed by phagocytosis.Which would be effective in killing parasites?

Accepted Answer

A)  complement protein
B)  T helper cells
C)  B cells
D)  macrophages
E)  basophilsF) A) and C)
G) A) and D)

Question 4

The primary immune response produces memory cells that stimulate a faster immune response on a subsequent exposure to the same foreign antigen.

Accepted Answer

A) True 
 B)False

Question 5

The role of B cells in adaptive immunity is ______,versus the role of T cells in adaptive immunity is ______.

Accepted Answer

A)  to recognize any antigen;to recognize a specific antigen
B)  to recognize a specific antigen;to recognize any antigen
C)  to secrete antibodies in humoral immunity;to attack bad cells in cell-mediated immunity
D)  to attack bad cells in cell-mediated immunity;to secrete antibodies in humoral immunity;
E)  to create antigens;to destroy antibodiesF) All of the above
G) A) and B)

Question 6

A phagocyte is a

Accepted Answer

A)  cell that engulfs other cells and debris.
B)  cell that primarily is used to produce antibodies.
C)  cell that produces white blood cells.
D)  cell that produces platelets.
E)  cell that transports oxygen to tissues.F) A) and D)
G) A) and C)

Question 7

The type of cell that is primarily responsible for initiating and coordinating the adaptive immune response is the B cell.

Accepted Answer

A) True 
 B)False

Question 8

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 D)
G) B) and E)

Question 9

White blood cells are produced

Accepted Answer

A)  by mitotic division of other white blood cells.
B)  from platelets.
C)  from chondrocytes.
D)  from bone marrow stem cells.
E)  from plasma proteins.F) B) and D)
G) A) and E)

Question 10

A primary "antigen presenting cell," a cell that presents an antigen to a helper T cell,is a

Accepted Answer

A)  B cell.
B)  T cell.
C)  macrophage.
D)  plasma cell.
E)  chondrocytE.F) B) and E)
G) A) and C)

Question 11

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) C) and D)
G) B) and E)

Question 12

Which of the following vaccines would expose a person to an antigen for the longest time,and thus be the least likely to require repeated booster vaccinations?

Accepted Answer

A)  an inactivated pathogen
B)  inactivated toxins
C)  subunits of pathogens
D)  a live weakened pathogen
E)  individual proteins from pathogensF) None of the above
G) C) and D)

Question 13

A major challenge is finding an acceptable bone marrow donor with the matching complex of Major Histocompatibility (MHC) proteins a person needs.Why is it important that the MHC proteins match between the donor and recipient?

Accepted Answer

A)  If they don't match,the donor's immune system will see the recipient's bone marrow as foreign.
B)  MHC proteins make antibodies that could attack the recipient's immune system.
C)  MHC proteins serve as inhibitors of the immune system.
D)  If they don't match,the recipient's immune system will see the donor's bone marrow as foreign.
E)  MHC proteins are used by cytotoxic T cells to kill bacteria,and if they don't match they won't work properly.F) B) and E)
G) A) and D)

Question 14

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) B) and E)
G) D) and E)

Question 15

Physical and chemical barriers that form the first line of innate defense include

Accepted Answer

A)  the acidity of the stomach.
B)  tear fluid from the eye.
C)  an un-punctured skin.
D)  mucus and cilia of the respiratory tract.
E)  All answers are correct.F) A) and B)
G) B) and E)

Question 16

The "master cells" of the immune system that initiate and coordinate the adaptive immune response are

Accepted Answer

A)  basophils.
B)  helper T cells.
C)  mast cells.
D)  cytotoxic T cells.
E)  B cells.F) A) and C)
G) A) and B)

Question 17

If you see B cells,you know that a humeral response is underway.

Accepted Answer

A) True 
 B)False

Question 18

Which is not a major part of the immune system?

Accepted Answer

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

Question 19

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

Question 20

If you observe an immune reaction involving a cytotoxic T cell,it is a

Accepted Answer

A)  primary response.
B)  secondary response.
C)  cell-mediated response.
D)  humeral response.
E)  No answer is correct.F) A) and C)
G) A) and E)

Exam 29: The Immune System

Every year the common flu vaccine is designed to protect against three different strains of the influenza virus.Why do scientists typically have to make a new vaccine every year?

Correct AnswerverifiedShow Answer

White blood cells are produced

Correct AnswerverifiedShow Answer

What is not part of the innate defense response?

Correct AnswerverifiedShow Answer

Which is an example of passive immunity?

Correct AnswerverifiedShow Answer

The primary immune response produces memory cells that stimulate a faster immune response on a subsequent exposure to the same foreign antigen.

Correct AnswerverifiedShow Answer

Which is not a major part of the immune system?

Correct AnswerverifiedShow Answer

Many parasites are too large to be engulfed by phagocytosis.Which would be effective in killing parasites?

Correct AnswerverifiedShow Answer

Physical and chemical barriers that form the first line of innate defense include

Correct AnswerverifiedShow Answer

If you observe an immune reaction involving a cytotoxic T cell,it is a

Correct AnswerverifiedShow Answer

Why do lymph nodes often become swollen during an infection?

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

The role of B cells in adaptive immunity is ______,versus the role of T cells in adaptive immunity is ______.

Correct AnswerverifiedShow Answer

Which of the following vaccines would expose a person to an antigen for the longest time,and thus be the least likely to require repeated booster vaccinations?

Correct AnswerverifiedShow Answer

A primary "antigen presenting cell," a cell that presents an antigen to a helper T cell,is a

Correct AnswerverifiedShow Answer

A major challenge is finding an acceptable bone marrow donor with the matching complex of Major Histocompatibility (MHC) proteins a person needs.Why is it important that the MHC proteins match between the donor and recipient?

Correct AnswerverifiedShow Answer

A phagocyte is a

Correct AnswerverifiedShow Answer

If you see B cells,you know that a humeral response is underway.

Correct AnswerverifiedShow Answer

The type of cell that is primarily responsible for initiating and coordinating the adaptive immune response is the B cell.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The "master cells" of the immune system that initiate and coordinate the adaptive immune response are

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The role of B cells in adaptive immunity is ,versus the role of T cells in adaptive immunity is .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified