Question 1

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

Accepted Answer

A)  histamine.
B)  interleukin.
C)  complement protein.
D)  interferon.
E)  epinephrinE.F) B) and D)
G) B) and E)

Question 2

If you were using a molecular tool to label the stem cells that produce white blood cells,most of the labeling would be in the thymus.

Accepted Answer

A) True 
 B)False

Question 3

Which is an example of humoral immunity?

Accepted Answer

A)  a cytotoxic T cell destroying a virus-infected cell
B)  a self-attack from an autoimmune disease
C)  antibodies produced that create an immunodeficiency
D)  antibodies produced that clone a pathogen
E)  antibodies produced that destroy an invading pathogenF) B) and E)
G) A) and E)

Question 4

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 D)
G) C) and E)

Question 5

Which 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 answers are correct.F) B) and E)
G) A) and B)

Question 6

Antibodies are made against a very small portion of an antigen called an epitope.An epitope is often just five to six amino acids from a protein on an antigen.Which explains how antibodies could be produced against just a small part of an antigen?

Accepted Answer

A)  T helper cells secrete enzymes that digest the pathogen.
B)  B cells produce antibodies that bind directly to a single epitope on the antigen.
C)  Cytotoxic T cells poke holes in the antigen.
D)  Complement protein pokes holes in the antigen.
E)  Macrophages engulf and digest the pathogen.F) A) and E)
G) A) and B)

Question 7

The primary function of a vaccine is to

Accepted Answer

A)  introduce antibodies into a person.
B)  create immunological memory without causing disease.
C)  introduce synthetic drugs into a person.
D)  give a person a mild disease.
E)  stimulate the production of blood platelets.F) B) and D)
G) D) and E)

Question 8

When a baby receives antibodies in breast milk,this is an example of passive immunity.

Accepted Answer

A) True 
 B)False

Question 9

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 D)
G) B) and C)

Question 10

When explaining a patient's near death from anaphylactic shock,you would tell the patient that this was a secondary immune response.

Accepted Answer

A) True 
 B)False

Question 11

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

Question 12

Which is correct about primary and secondary immune responses?

Accepted Answer

A)  The primary immune response occurs first.
B)  The primary immune response is smaller.
C)  Both respond to foreign antigens.
D)  Both are responses of adaptive immunity.
E)  All answers are correct.F) A) and B)
G) C) and E)

Question 13

Although the lymphatic system has many similarities to the circulatory system,what can the lymphatic system accomplish that the circulatory system cannot?

Accepted Answer

A)  generate white blood cells
B)  collect bacteria,viruses,cancer cells,and other large particles from body tissues
C)  generate red blood cells
D)  destroy bacteria,viruses,cancer cells,and other large particles from body tissues
E)  generate new body tissues during recoveryF) A) and D)
G) A) and C)

Question 14

Which correctly describes B cells and T cells?

Accepted Answer

A)  B cells and T cells are lymphocytes.
B)  B cells and T cells attack cancerous cells in the body.
C)  B cells and T cells attack foreign particles in the body.
D)  B cells and T cells are not innate defenses.
E)  All answers are correct.F) C) and D)
G) A) and D)

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

In many autoimmune diseases such as lupus and rheumatoid arthritis,antibody complexes form in the blood.Kidney failure is a common consequence of these diseases for which reason?

Accepted Answer

A)  Antibodies attack the kidney.
B)  The antibody complexes become trapped in the lymph.
C)  The antibody complexes become trapped in the kidney.
D)  The kidney is a part of the lymphatic system and becomes full of lymphocytes.
E)  The kidney is part of the immune system and becomes full of leukocytes.F) A) and E)
G) B) and C)

Question 17

Histamine triggers vasodilation and leakiness in blood vessels during inflammation.Why would this be beneficial in fighting an infection by a pathogen?

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 cellsF) A) and B)
G) C) and D)

Question 18

If,for a study,you wanted to cause blood vessel dilation and swelling to mimic effects of innate immunity,you would want to inject

Accepted Answer

A)  interleukin.
B)  complement protein.
C)  interferon.
D)  epinephrine.
E)  histaminE.F) B) and E)
G) A) and B)

Question 19

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

Question 20

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

Exam 29: The Immune System

Although the lymphatic system has many similarities to the circulatory system,what can the lymphatic system accomplish that the circulatory system cannot?

Correct AnswerverifiedShow Answer

Which correctly describes B cells and T cells?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which is an example of humoral immunity?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In many autoimmune diseases such as lupus and rheumatoid arthritis,antibody complexes form in the blood.Kidney failure is a common consequence of these diseases for which reason?

Correct AnswerverifiedShow Answer

If you were using a molecular tool to label the stem cells that produce white blood cells,most of the labeling would be in the thymus.

Correct AnswerverifiedShow Answer

When explaining a patient's near death from anaphylactic shock,you would tell the patient that this was a secondary immune response.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Histamine triggers vasodilation and leakiness in blood vessels during inflammation.Why would this be beneficial in fighting an infection by a pathogen?

Correct AnswerverifiedShow Answer

If,for a study,you wanted to cause blood vessel dilation and swelling to mimic effects of innate immunity,you would want to inject

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

Which is a reason why fever is considered a defense mechanism?

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

Which is an example of active immunity?

Correct AnswerverifiedShow Answer

Antibodies are made against a very small portion of an antigen called an epitope.An epitope is often just five to six amino acids from a protein on an antigen.Which explains how antibodies could be produced against just a small part of an antigen?

Correct AnswerverifiedShow Answer

Which is correct about primary and secondary immune responses?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

When a baby receives antibodies in breast milk,this is an example of passive immunity.

Correct AnswerverifiedShow Answer

The primary function of a vaccine is to

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

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