Question 1

The cloning of T cells produces both memory cells and plasma cells.

Accepted Answer

A) True 
 B)False

Question 2

Cell-mediated immunity involves T cells.

Accepted Answer

A) True 
 B)False

Question 3

Unlike B cells, T cells do not display antigen receptors on their surface membranes.

Accepted Answer

A) True 
 B)False

Question 4

Match each antibody class with its description, function, or location.
-The predominant class of antibody produced after initial contact with an antigen

Accepted Answer

A) IgG 
B) IgM 
C) IgD 
D) IgE 
E) IgA 
A) IgG 
B) IgM 
C) IgD 
D) IgE 
E) IgA

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

Memory cells:

Accepted Answer

A) immediately secrete antibodies when they are formed. 
B) are supporting cells and are not related to antibody production. 
C) are a special type of T cell. 
D) become plasma cells when exposed to an antigen. 
A) immediately secrete antibodies when they are formed. 
B) are supporting cells and are not related to antibody production. 
C) are a special type of T cell. 
D) become plasma cells when exposed to an antigen.

Question 7

Most antigens are large protein molecules foreign to the body.

Accepted Answer

A) True 
 B)False

Question 8

Antibody molecules may agglutinate antigens that are on the surface of microorganisms. Explain how agglutination can help promote the destruction of microorganisms such as bacteria.

Accepted Answer

Agglutination is the process by which an

Question 9

Steven had mumps as a child. At age 41 he was again exposed to the mumps virus; however, he did not experience any symptoms of the mumps. Explain why.

Accepted Answer

The answer of Steven had mumps as a child. At...

Question 10

Even though tumor cells are part of your body, your immune system treats them as "foreign" and tries to destroy them.

Accepted Answer

A) True 
 B)False

Question 11

Which is the best explanation of how immune suppression can be helpful in preventing transplant rejection?

Accepted Answer

A) The immune system sometimes reacts against foreign antigens in the grafted tissue, causing what is often called a rejection syndrome. Immune suppression drugs reduce the immune system's ability to attack the foreign antigens in the donated tissue. 
B) Because rejection is caused by an inappropriate and excessive response to self-antigens, giving immune suppression drugs would reduce this effect. 
C) Rejection involves antigen-antibody reactions, mainly IgE triggered by repeated exposure to an allergen, so immune-suppression drugs would reduce the reaction to the allergen, which in this case is the transplanted organ. 
D) Delayed allergic response occurs with transplanted organs, so immune-suppressive drugs would reduce the allergic response and decrease rejection. 
A) The immune system sometimes reacts against foreign antigens in the grafted tissue, causing what is often called a rejection syndrome. Immune suppression drugs reduce the immune system's ability to attack the foreign antigens in the donated tissue. 
B) Because rejection is caused by an inappropriate and excessive response to self-antigens, giving immune suppression drugs would reduce this effect. 
C) Rejection involves antigen-antibody reactions, mainly IgE triggered by repeated exposure to an allergen, so immune-suppression drugs would reduce the reaction to the allergen, which in this case is the transplanted organ. 
D) Delayed allergic response occurs with transplanted organs, so immune-suppressive drugs would reduce the allergic response and decrease rejection.

Question 12

Examples of lymphocytes are:

Accepted Answer

A) B cells. 
B) T cells. 
C) both A and B. 
D) none of the above. 
A) B cells. 
B) T cells. 
C) both A and B. 
D) none of the above.

Question 13

The antibody commonly found in tears and saliva is:

Accepted Answer

A) IgE. 
B) IgD. 
C) IgM. 
D) IgA. 
A) IgE. 
B) IgD. 
C) IgM. 
D) IgA.

Question 14

Which of the following is not caused by complement protein activity?

Accepted Answer

A) Vasodilation 
B) Agglutination of antigens 
C) Cytolysis 
D) All of the above are caused by complement protein activity. 
A) Vasodilation 
B) Agglutination of antigens 
C) Cytolysis 
D) All of the above are caused by complement protein activity.

Question 15

T cells react mainly to antigens that are dissolved in plasma.

Accepted Answer

A) True 
 B)False

Question 16

When antibodies cause antigens to agglutinate, it allows them to be disposed of by phagocytes more easily.

Accepted Answer

A) True 
 B)False

Question 17

If a person had a severe shortage of antigen-presenting cells, it would have the greatest impact on the humoral or antibody-forming specific immune system.

Accepted Answer

A) True 
 B)False

Question 18

One of the antigen-specific sites on the antibody is used to activate the complement cascade in the blood.

Accepted Answer

A) True 
 B)False

Question 19

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. 
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.

Question 20

The most abundant circulating antibody, the one that normally makes up about 75% of all the antibodies in the blood, is:

Accepted Answer

A) IgG. 
B) IgA. 
C) IgE. 
D) IgM. 
A) IgG. 
B) IgA. 
C) IgE. 
D) IgM.

Exam 33: Adaptive Immunity

The cloning of T cells produces both memory cells and plasma cells.

Cell-mediated immunity involves T cells.

Unlike B cells, T cells do not display antigen receptors on their surface membranes.

Match each antibody class with its description, function, or location. -The predominant class of antibody produced after initial contact with an antigen

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

Memory cells:

Most antigens are large protein molecules foreign to the body.

Antibody molecules may agglutinate antigens that are on the surface of microorganisms. Explain how agglutination can help promote the destruction of microorganisms such as bacteria.

Steven had mumps as a child. At age 41 he was again exposed to the mumps virus; however, he did not experience any symptoms of the mumps. Explain why.

Even though tumor cells are part of your body, your immune system treats them as "foreign" and tries to destroy them.

Which is the best explanation of how immune suppression can be helpful in preventing transplant rejection?

Examples of lymphocytes are:

The antibody commonly found in tears and saliva is:

Which of the following is not caused by complement protein activity?

T cells react mainly to antigens that are dissolved in plasma.

When antibodies cause antigens to agglutinate, it allows them to be disposed of by phagocytes more easily.

If a person had a severe shortage of antigen-presenting cells, it would have the greatest impact on the humoral or antibody-forming specific immune system.

One of the antigen-specific sites on the antibody is used to activate the complement cascade in the blood.

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

The most abundant circulating antibody, the one that normally makes up about 75% of all the antibodies in the blood, is:

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