Question 1

Complement can best be described as a(n) :

Accepted Answer

A)   enzyme in blood.
B)   lymphokine.
C)   antibody.
D)   hormone.E) A) and B)
F) A) and D)

Question 2

Compare and contrast the development of B cells and T cells.

Accepted Answer

B cells and T cells are both types of ly...

Question 3

A person with a nonfunctioning immune system could still benefit from both natural and artificial passive immunity.

Accepted Answer

A) True 
 B)False

Question 4

Passive immunity provides more rapid protection than does active immunity.

Accepted Answer

A) True 
 B)False

Question 5

An antibody molecule must have at least two antigen-binding sites.

Accepted Answer

A) True 
 B)False

Question 6

Macromolecules that induce the immune system to make certain responses are called:

Accepted Answer

A)   antigens.
B)   plasma proteins.
C)   antibodies.
D)   prostaglandins.E) A) and B)
F) A) and D)

Question 7

According to the clonal selection theory, antigens select lymphocyte clones by:

Accepted Answer

A)   the chemicals secreted by the lymphocytes.
B)   the proximity of the lymphocytes to the antigens.
C)   the shape of receptors on the lymphocyte's plasma membrane.
D)   producing toxins.E) B) and C)
F) C) and D)

Question 8

If a person had a nonfunctioning immune system, what types of adaptive immunity (artificial, natural, active, and passive) could be beneficial and which would not be beneficial or even harmful?

Accepted Answer

If a person had a nonfunctioning immune ...

Question 9

Why is it difficult to predict the total number of AIDS cases?

Accepted Answer

Predicting the total number of AIDS (Acq...

Question 10

If a blood test indicated that a person had a high level of IgM antibodies in the blood, it could be concluded that:

Accepted Answer

A)   the person's body is responding to a reexposure to an antigen.
B)   the person's body is responding to the initial exposure to an antigen.
C)   the person has an increasing likelihood that he will become allergic to an antigen.
D)   no conclusions could be made.E) A) and D)
F) C) and D)

Question 11

Which antibody has 10 antigen-binding sites?

Accepted Answer

A)   IgM
B)   IgA
C)   IgD
D)   IgGE) A) and B)
F) A) and C)

Question 12

Plasma cells must be in a constant state of protein synthesis to accomplish their function.

Accepted Answer

A) True 
 B)False

Question 13

Why is it difficult to predict the total number of acquired immune deficiency syndrome (AIDS)  cases that will result from known HIV-infected patients?

Accepted Answer

A)   After a person is infected, the signs of AIDS infection might not be apparent for years.
B)   The current treatment of highly active antiretroviral therapy (HAART)  alters the infected cells.
C)   Infected cells begin to change only after azidothymidine (AZT)  treatment is started.
D)   So many people have received the vaccine that there is no way to count who actually has the infection.E) B) and C)
F) None of the above

Question 14

The somatic recombination hypothesis is one possible explanation for the diversity of antibodies.

Accepted Answer

A) True 
 B)False

Question 15

Describe the development and activation of B cells.

Accepted Answer

B cells, also known as B lymphocytes, ar...

Question 16

The chemical messengers that T cells release into inflamed tissues are called lymphotoxins.

Accepted Answer

A) True 
 B)False

Question 17

Match each term with its corresponding definition.
-Lymphocyte that produces antibodies that attack pathogens or direct other cells to attack them

Accepted Answer

A)  Specific immunity
B)  Antibody
C)  B cell
D)  Antigen
E)  T cellF) C) and D)
G) A) and B)

Question 18

Interleukins are cytokinins.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following is true of lymphokines?

Accepted Answer

A)   They are produced by B cells.
B)   They inhibit macrophage activity.
C)   Lymphotoxin is an example of a lymphokine.
D)   They are produced by helper T cells.E) B) and C)
F) A) and D)

Question 20

Which of the following can activate complement?

Accepted Answer

A)   T cells
B)   Interferon
C)   Properdin
D)   LymphokineE) None of the above
F) All of the above

Exam 33: Adaptive Immunity

Plasma cells must be in a constant state of protein synthesis to accomplish their function.

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Which of the following is true of lymphokines?

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According to the clonal selection theory, antigens select lymphocyte clones by:

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Which of the following can activate complement?

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If a person had a nonfunctioning immune system, what types of adaptive immunity (artificial, natural, active, and passive) could be beneficial and which would not be beneficial or even harmful?

Correct AnswerAnswered by ExamLex AIIf a person had a nonfunctioning immune ...View AnswerShow Answer

Interleukins are cytokinins.

Correct AnswerverifiedShow Answer

An antibody molecule must have at least two antigen-binding sites.

Correct AnswerverifiedShow Answer

The chemical messengers that T cells release into inflamed tissues are called lymphotoxins.

Correct AnswerverifiedShow Answer

Match each term with its corresponding definition. -Lymphocyte that produces antibodies that attack pathogens or direct other cells to attack them

Correct AnswerverifiedShow Answer

Complement can best be described as a(n) :

Correct AnswerverifiedShow Answer

Why is it difficult to predict the total number of AIDS cases?

Correct AnswerAnswered by ExamLex AIPredicting the total number of AIDS (Acq...View AnswerShow Answer

Macromolecules that induce the immune system to make certain responses are called:

Correct AnswerverifiedShow Answer

Passive immunity provides more rapid protection than does active immunity.

Correct AnswerverifiedShow Answer

Describe the development and activation of B cells.

Correct AnswerAnswered by ExamLex AIB cells, also known as B lymphocytes, ar...View AnswerShow Answer

A person with a nonfunctioning immune system could still benefit from both natural and artificial passive immunity.

Correct AnswerverifiedShow Answer

Why is it difficult to predict the total number of acquired immune deficiency syndrome (AIDS) cases that will result from known HIV-infected patients?

Correct AnswerverifiedShow Answer

Which antibody has 10 antigen-binding sites?

Correct AnswerverifiedShow Answer

The somatic recombination hypothesis is one possible explanation for the diversity of antibodies.

Correct AnswerverifiedShow Answer

If a blood test indicated that a person had a high level of IgM antibodies in the blood, it could be concluded that:

Correct AnswerverifiedShow Answer

Compare and contrast the development of B cells and T cells.

Correct AnswerAnswered by ExamLex AIB cells and T cells are both types of ly...View AnswerShow Answer

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If a person had a nonfunctioning immune ...
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Predicting the total number of AIDS (Acq...
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B cells, also known as B lymphocytes, ar...
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B cells and T cells are both types of ly...
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