Question 1

The best way to reduce bacterial pathogens in the blood stream is to reduce a fever as quickly as possible.

Accepted Answer

A) True 
 B)False

Question 2

Match between columns
                        Premises: migrate through blood and lymph, directly attacking and destroying foreign cells
primary target of HIV
stimulate the immune system by secreting lymphokines and interleukins; they activate B lymphocytes and macrophages
activate the immune system when an antigen reenters the body

Accepted Answer

The Answer of cytotoxic T cells and helper T cells is...

Question 3

Skin is able to prevent most microorganisms from entering the body by

Accepted Answer

A)  producing alkaline secretions 
B)  having keratin in the uppermost layer 
C)  production of antibodies 
D)  the adhesion junction in the skin preventing bacteria from entering 
E)  releasing macrophages on the skin surface 
A)  producing alkaline secretions 
B)  having keratin in the uppermost layer 
C)  production of antibodies 
D)  the adhesion junction in the skin preventing bacteria from entering 
E)  releasing macrophages on the skin surface

Question 4

Microbes that cause disease are referred to as ________.

Accepted Answer

The answer of Microbes that cause disease are referred to...

Question 5

Histamine is released by neutrophils to induce an inflammation response when tissues become damaged.

Accepted Answer

A) True 
 B)False

Question 6

While T lymphocytes are maturing, each of them develops one of two sets of proteins on their cell surface. These proteins are known as ________ and ________.

Accepted Answer

CD4, CD8 (

Question 7

The first type of white blood cell to arrive at the site of an infection is the eosinophil.

Accepted Answer

A) True 
 B)False

Question 8

The bubonic plague epidemic that swept through Europe between 1348 and 1350 A.D. was induced by a(n)

Accepted Answer

A)  virus 
B)  prion 
C)  protozoan 
D)  bacterium 
E)  unidentified eukaryotic organism 
A)  virus 
B)  prion 
C)  protozoan 
D)  bacterium 
E)  unidentified eukaryotic organism

Question 9

Which of the following leukocytes is most likely to be directly involved in the destruction of flukes (a parasitic flatworm)?

Accepted Answer

A)  natural killer cells 
B)  eosinophils 
C)  neutrophils 
D)  B lymphocytes 
E)  basophils 
A)  natural killer cells 
B)  eosinophils 
C)  neutrophils 
D)  B lymphocytes 
E)  basophils

Question 10

When comparing viruses and bacteria, which one of the following statements is CORRECT?

Accepted Answer

A)  Viruses are larger than bacteria. 
B)  Viruses are pathogens; bacteria are decomposers. 
C)  Viruses have membrane-bound organelles; bacteria do not have membrane-bound organelles. 
D)  Viruses and bacteria are both able to reproduce on their own. 
E)  Viruses and bacteria both contain genetic material. 
A)  Viruses are larger than bacteria. 
B)  Viruses are pathogens; bacteria are decomposers. 
C)  Viruses have membrane-bound organelles; bacteria do not have membrane-bound organelles. 
D)  Viruses and bacteria are both able to reproduce on their own. 
E)  Viruses and bacteria both contain genetic material.

Question 11

Match between columns
                        Premises: cytotoxic T cells
acidic pH of skin
earwax
release of perforin and granzyme by cytotoxic cells
inflammation
release of interferons
production of antibodies by plasma cells
natural killer cells

Accepted Answer

The Answer of physical or chemical barrier and specific defense is...

Question 12

Explain why passive immunization is not effective in producing long-term immunity.

Accepted Answer

Passive immunization involves administer

Question 13

The bacteria that normally live on the mucous membranes of the digestive tract and vagina provide protection against infection with harmful disease-producing microorganisms.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following are proteins in the blood, which when activated can lyse bacterial cells, mark other bacterial cells for destruction, and enhance inflammation?

Accepted Answer

A)  albumins 
B)  antibodies 
C)  complement 
D)  interferons 
E)  lymphokines 
A)  albumins 
B)  antibodies 
C)  complement 
D)  interferons 
E)  lymphokines

Question 15

-The figure above illustrates antibody titers produced during a primary and secondary immune response. All of the following statements about the primary and secondary immune response are correct EXCEPT which one?

Accepted Answer

A)  Antibody is produced at a much higher rate during the secondary immune response. 
B)  The antibody level produced in the secondary response is three times greater than that produced during the primary immune response. 
C)  There is a lag time between antigen exposure and antibody production in the primary immune response that is not seen in the secondary immune response. 
D)  The difference between the two responses is due to the presence of memory cells during the secondary response. 
E)  Antibody levels stay elevated for a longer time following a secondary response. 
A)  Antibody is produced at a much higher rate during the secondary immune response. 
B)  The antibody level produced in the secondary response is three times greater than that produced during the primary immune response. 
C)  There is a lag time between antigen exposure and antibody production in the primary immune response that is not seen in the secondary immune response. 
D)  The difference between the two responses is due to the presence of memory cells during the secondary response. 
E)  Antibody levels stay elevated for a longer time following a secondary response.

Question 16

The thymus gland, which is responsible for the development of T cells, stops growing during adolescence and shrinks as one grows into adulthood.

Accepted Answer

A) True 
 B)False

Question 17

Which one of the following enables T helper cells to stimulate and activate other cells of the immune response?

Accepted Answer

A)  interferon 
B)  cytokines 
C)  antibodies 
D)  complement 
E)  histamine 
A)  interferon 
B)  cytokines 
C)  antibodies 
D)  complement 
E)  histamine

Question 18

Which one of the following is/are located in the tonsils to filter out many of the microorganisms that enter the throat?

Accepted Answer

A)  thymus 
B)  adenoids 
C)  lymphocytes 
D)  platelets 
E)  red blood cells 
A)  thymus 
B)  adenoids 
C)  lymphocytes 
D)  platelets 
E)  red blood cells

Question 19

Which immune system cell must be presented with antigen by an antigen-presenting cell such as a macrophage, in order to become appropriately activated?

Accepted Answer

A)  B lymphocyte 
B)  plasma cell 
C)  macrophage 
D)  T lymphocyte 
E)  natural killer cell 
A)  B lymphocyte 
B)  plasma cell 
C)  macrophage 
D)  T lymphocyte 
E)  natural killer cell

Question 20

Match between columns
                        Premises: transports lymph in the body
secretes hormones important in the maturation of T cells
removes microorganisms and old red blood cells from the blood
filters microorganisms and cellular debris from lymph
filters out microorganisms that enter the throat by food or air

Accepted Answer

The Answer of spleen and lymphatic vessel and thymus and is...

Exam 9: The Immune System and Mechanisms of Defense

The best way to reduce bacterial pathogens in the blood stream is to reduce a fever as quickly as possible.

Skin is able to prevent most microorganisms from entering the body by

Microbes that cause disease are referred to as ________.

Histamine is released by neutrophils to induce an inflammation response when tissues become damaged.

While T lymphocytes are maturing, each of them develops one of two sets of proteins on their cell surface. These proteins are known as ________ and ________.

The first type of white blood cell to arrive at the site of an infection is the eosinophil.

The bubonic plague epidemic that swept through Europe between 1348 and 1350 A.D. was induced by a(n)

Which of the following leukocytes is most likely to be directly involved in the destruction of flukes (a parasitic flatworm)?

When comparing viruses and bacteria, which one of the following statements is CORRECT?

Explain why passive immunization is not effective in producing long-term immunity.

The bacteria that normally live on the mucous membranes of the digestive tract and vagina provide protection against infection with harmful disease-producing microorganisms.

Which of the following are proteins in the blood, which when activated can lyse bacterial cells, mark other bacterial cells for destruction, and enhance inflammation?

-The figure above illustrates antibody titers produced during a primary and secondary immune response. All of the following statements about the primary and secondary immune response are correct EXCEPT which one?

The thymus gland, which is responsible for the development of T cells, stops growing during adolescence and shrinks as one grows into adulthood.

Which one of the following enables T helper cells to stimulate and activate other cells of the immune response?

Which one of the following is/are located in the tonsils to filter out many of the microorganisms that enter the throat?

Which immune system cell must be presented with antigen by an antigen-presenting cell such as a macrophage, in order to become appropriately activated?

Human Biology, Science, and Society

The Chemistry of Living Things

Structure and Function of Cells

From Cells to Organ Systems

The Skeletal System

The Muscular System

Blood

Heart and Blood Vessels

The Respiratory System: Exchange of Gases

The Nervous System: Integration and Control

Sensory Mechanisms

The Endocrine System

The Digestive System and Nutrition

The Urinary System

Reproductive Systems

Cell Reproduction and Differentiation

Cancer: Uncontrolled Cell Division and Differentiation

Genetics and Inheritance

DNA Technology and Genetic Engineering

Development and Aging

Evolution and the Origins of Life

Ecosystems and Populations

Human Impacts, Biodiversity, and Environmental Issues

Filters

While T lymphocytes are maturing, each of them develops one of two sets of proteins on their cell surface. These proteins are known as and .