Question 1

Which of the following is capable of resetting the thermostat of the body to cause a fever?

Accepted Answer

A)  antigen 
B)  perforin 
C)  complement 
D)  pyrogen 
A)  antigen 
B)  perforin 
C)  complement 
D)  pyrogen

Question 2

According to preliminary tests, Alexandra has liver cancer, but the mass is inoperable and hard to localize. In order to administer x-ray beam therapy safely and effectively, the doctors must find the exact location of the cancer. Which of the following methods would be best in this situation?

Accepted Answer

A)  radioactive monoclonal antibodies 
B)  fluorescence-linked B cells 
C)  activated neutrophils 
D)  enormous mast cell injections 
A)  radioactive monoclonal antibodies 
B)  fluorescence-linked B cells 
C)  activated neutrophils 
D)  enormous mast cell injections

Question 3

A(n) ________ is an overreaction by the immune system to an allergen.

Accepted Answer

The answer of A(n) ________ is an overreaction by the...

Question 4

Which of the following can be defined as small proteins that are secreted from virally infected cells to prevent the spread of the infection?

Accepted Answer

A)  macrophages 
B)  mast cells 
C)  immunoglobulins 
D)  interferons 
A)  macrophages 
B)  mast cells 
C)  immunoglobulins 
D)  interferons

Question 5

Why is organ transplantation challenging?

Accepted Answer

A)  Organs cannot be grown in the laboratory. 
B)  Identical twins cannot donate organs to each other by law. 
C)  T cells from the immune system attack transplanted tissue. 
D)  To harvest a donor's organs, the donor needs to be dead for at least 24 hours. 
A)  Organs cannot be grown in the laboratory. 
B)  Identical twins cannot donate organs to each other by law. 
C)  T cells from the immune system attack transplanted tissue. 
D)  To harvest a donor's organs, the donor needs to be dead for at least 24 hours.

Question 6

The eye is a warm, moist environment favored by many harmful bacteria. Nevertheless, eye infections are relatively rare. Why is this?

Accepted Answer

A)  The enzyme tearase inhibits bacterial growth. 
B)  Tears contain the antibacterial enzyme lysozyme. 
C)  The eyes are constantly exposed to UV light, which inhibits bacterial growth. 
D)  Antibodies, particularly IgM, are secreted in abundance in the tears. 
A)  The enzyme tearase inhibits bacterial growth. 
B)  Tears contain the antibacterial enzyme lysozyme. 
C)  The eyes are constantly exposed to UV light, which inhibits bacterial growth. 
D)  Antibodies, particularly IgM, are secreted in abundance in the tears.

Question 7

If all of the hairlike structures, called ________, in respiratory passages suddenly stopped working, a person would probably have more respiratory infections.

Accepted Answer

The answer of If all of the hairlike structures, called...

Question 8

Which antibody has the shape of a pentamer, or five-sided arrangement?

Accepted Answer

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

Question 9

What are the three strategies for defending against foreign organisms, cells, or molecules?

Accepted Answer

(1) Prevent foreign cells or molecules f

Question 10

Which of the following is not a function of an antibody?

Accepted Answer

A)  activate complement cascade 
B)  attract phagocytes 
C)  stimulate helper T cells 
D)  neutralize toxins 
A)  activate complement cascade 
B)  attract phagocytes 
C)  stimulate helper T cells 
D)  neutralize toxins

Question 11

Ivonna, 15, was exposed to the measles virus 13 days ago but doesn't seem to be getting sick. She was sick from the disease when she was 10, so her body has most likely activated this reaction.

Accepted Answer

A)  secondary response 
B)  primary response 
C)  final response 
D)  anabasic 
A)  secondary response 
B)  primary response 
C)  final response 
D)  anabasic

Question 12

Allergens combine with IgE to cause mast cells to release ________.

Accepted Answer

A)  interferons 
B)  histamine 
C)  plasma cells 
D)  interleukin I 
A)  interferons 
B)  histamine 
C)  plasma cells 
D)  interleukin I

Question 13

A system that consists of a group of 20 proteins whose activities enhance the body's other defense mechanisms is called ________.

Accepted Answer

A)  antigen 
B)  antibodies 
C)  mast cell 
D)  complement 
A)  antigen 
B)  antibodies 
C)  mast cell 
D)  complement

Question 14

Each cell in an individual's body carries certain molecules that tell the body they belong to that individual. Those molecules are called ________.

Accepted Answer

The answer of Each cell in an individual's body carries...

Question 15

If a disease attacked this type of white blood cell, a person would no longer be able to mobilize his or her specific defenses.

Accepted Answer

A)  plasma cells 
B)  helper T cells 
C)  cytotoxic T lymphocytes 
D)  B lymphocytes 
A)  plasma cells 
B)  helper T cells 
C)  cytotoxic T lymphocytes 
D)  B lymphocytes

Question 16

________ is the procedure in which a harmless form of an antigen from a pathogen is introduced into the body in order to stimulate an immune response to that antigen.

Accepted Answer

Vaccinatio

Question 17

________ are lymphocytes that originate in the bone marrow but then mature in the thymus.

Accepted Answer

The answer of ________ are lymphocytes that originate in the...

Question 18

Any substance that triggers an immune response in the body is called a(n) ________.

Accepted Answer

A)  MHC marker 
B)  memory cell 
C)  antigen 
D)  complement 
A)  MHC marker 
B)  memory cell 
C)  antigen 
D)  complement

Question 19

Why are severe burn patients at extreme risk of infection?

Accepted Answer

A)  The skin is the first and primary barrier to preventing ingress of foreign substances. 
B)  These patients have to stay in a hospital environment for a long time while being exposed to sick people. 
C)  Most immune system cells are destroyed when the skin is damaged. 
D)  The skin helps with the production of vitamin E, a necessary disease-fighting vitamin. 
A)  The skin is the first and primary barrier to preventing ingress of foreign substances. 
B)  These patients have to stay in a hospital environment for a long time while being exposed to sick people. 
C)  Most immune system cells are destroyed when the skin is damaged. 
D)  The skin helps with the production of vitamin E, a necessary disease-fighting vitamin.

Question 20

Match between columns
                        Premises: The skin barrier is part of this line of defense.
These occur when the immune system fails to properly identify self from nonself, which results in an attack on the tissues or organs.
Line of defense in which the production of antibodies is involved.
If you have a parasite, these white blood cells will work to kill it.
These white blood cells, part of the first line of defense, arrive first in the attack against invaders and consume the pathogens.
If you had none of these cells, you could no longer make antibodies.
Line of defense that involves natural killer cells.
Effector T cells responsible for the cell-mediated immune response.
Small mobile connective tissues cells that, along with basophils, release histamine, which causes redness at the site of damage or illness.

Accepted Answer

The Answer of First line of defense and Eosinophils and is...

Exam 17: Body Defense Mechanisms

Which of the following is capable of resetting the thermostat of the body to cause a fever?

According to preliminary tests, Alexandra has liver cancer, but the mass is inoperable and hard to localize. In order to administer x-ray beam therapy safely and effectively, the doctors must find the exact location of the cancer. Which of the following methods would be best in this situation?

A(n) ________ is an overreaction by the immune system to an allergen.

Which of the following can be defined as small proteins that are secreted from virally infected cells to prevent the spread of the infection?

Why is organ transplantation challenging?

The eye is a warm, moist environment favored by many harmful bacteria. Nevertheless, eye infections are relatively rare. Why is this?

If all of the hairlike structures, called ________, in respiratory passages suddenly stopped working, a person would probably have more respiratory infections.

Which antibody has the shape of a pentamer, or five-sided arrangement?

What are the three strategies for defending against foreign organisms, cells, or molecules?

Which of the following is not a function of an antibody?

Ivonna, 15, was exposed to the measles virus 13 days ago but doesn't seem to be getting sick. She was sick from the disease when she was 10, so her body has most likely activated this reaction.

Allergens combine with IgE to cause mast cells to release ________.

A system that consists of a group of 20 proteins whose activities enhance the body's other defense mechanisms is called ________.

Each cell in an individual's body carries certain molecules that tell the body they belong to that individual. Those molecules are called ________.

If a disease attacked this type of white blood cell, a person would no longer be able to mobilize his or her specific defenses.

________ is the procedure in which a harmless form of an antigen from a pathogen is introduced into the body in order to stimulate an immune response to that antigen.

________ are lymphocytes that originate in the bone marrow but then mature in the thymus.

Any substance that triggers an immune response in the body is called a(n) ________.

Why are severe burn patients at extreme risk of infection?

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