Question 1

What mechanisms do natural killer cells use to destroy body cells that have been infected by cancer or a virus?

Accepted Answer

They open up large holes in th

Question 2

Phagocytes patrol the body?s tissues and ingest invading microbes. Phagocytic cells include macrophages, dendritic cells, and __________.

Accepted Answer

The answer of Phagocytes patrol the body?s tissues and ingest...

Question 3

Type 1 diabetes is considered an autoimmune disease because the bodyʹs immune system attacks and destroys insulin-producing cells in the pancreas.

Accepted Answer

A) True 
 B)False

Question 4

IgD, IgM, IgG, IgA, and IgE are types of white blood cells.

Accepted Answer

A) True 
 B)False

Question 5

Macrophages

Accepted Answer

A)  are large, ciliated cells found in tears, saliva, and mucus. 
B)  phagocytize invading microbes 
C)  produce proteins that digest bacterial cell walls. 
D)  release chemicals that initiate blood clotting. 
E)  cannot squeeze through capillary walls. 
A)  are large, ciliated cells found in tears, saliva, and mucus. 
B)  phagocytize invading microbes 
C)  produce proteins that digest bacterial cell walls. 
D)  release chemicals that initiate blood clotting. 
E)  cannot squeeze through capillary walls.

Question 6

List the human bodyʹs three lines of defense against disease.

Accepted Answer

Nonspecific external barriers

Question 7

B cells mature in the bone marrow, whereas T cells migrate to the __________gland early in embryonic life, where they mature.

Accepted Answer

The answer of B cells mature in the bone marrow,...

Question 8

As shown in this figure, upon re-exposure to pollen, the pollen binds to

Accepted Answer

A)  free antibodies within the capillaries. 
B)  plasma cells. 
C)  antibodies on mast cells. 
D)  histamine. 
E)  T cells. 
A)  free antibodies within the capillaries. 
B)  plasma cells. 
C)  antibodies on mast cells. 
D)  histamine. 
E)  T cells.

Question 9

List the events that occur in an allergic reaction.

Accepted Answer

(1) Allergen binds to antibodies on spec

Question 10

Why doesnʹt your immune system attack your own cells?

Accepted Answer

Immature lymphocytes that respond to ʺse

Question 11

Which type of cell secretes antibodies into the blood?

Accepted Answer

A)  Cytotoxic T 
B)  Helper T 
C)  Memory 
D)  Plasma 
A)  Cytotoxic T 
B)  Helper T 
C)  Memory 
D)  Plasma

Question 12

When AIDS patients die, it is because

Accepted Answer

A)  HIV destroys the internal organs. 
B)  there are no treatments to slow the progress of the disease. 
C)  their immune systems cannot defend them from other infections. 
D)  the AIDS virus has a high rate of mutation. 
E)  they lack HIV antibodies. 
A)  HIV destroys the internal organs. 
B)  there are no treatments to slow the progress of the disease. 
C)  their immune systems cannot defend them from other infections. 
D)  the AIDS virus has a high rate of mutation. 
E)  they lack HIV antibodies.

Question 13

__________cells are immune system cells that mature in the bone marrow.

Accepted Answer

A)  Cytotoxic T 
B)  B 
C)  Memory 
D)  Helper T 
A)  Cytotoxic T 
B)  B 
C)  Memory 
D)  Helper T

Question 14

Inflammation occurs in response to chemicals, such as histamine, secreted by

Accepted Answer

A)  plasma cells. 
B)  natural killer cells. 
C)  T cells. 
D)  neutrophils. 
E)  mast cells. 
A)  plasma cells. 
B)  natural killer cells. 
C)  T cells. 
D)  neutrophils. 
E)  mast cells.

Question 15

Natural killer cells prevent viral infection by

Accepted Answer

A)  enzymatically destroying virus-infected cells. 
B)  phagocytizing cells that are infected with a virus. 
C)  ingesting the viruses and digesting them. 
D)  secreting proteins that punch holes in viral plasma membranes. 
A)  enzymatically destroying virus-infected cells. 
B)  phagocytizing cells that are infected with a virus. 
C)  ingesting the viruses and digesting them. 
D)  secreting proteins that punch holes in viral plasma membranes.

Question 16

Which of the following provides cell-mediated immunity?

Accepted Answer

A)  T cells 
B)  B cells 
C)  Red blood cells 
D)  Antibodies 
A)  T cells 
B)  B cells 
C)  Red blood cells 
D)  Antibodies

Question 17

HIV weakens a personʹs ability to fight off other infections by infecting and destroying helper T cells.

Accepted Answer

A) True 
 B)False

Question 18

What three steps do all adaptive immune responses include?

Accepted Answer

(1) Lymphocytes recognize the

Question 19

Aspirin reduces fevers; however, many physicians do NOT recommend aspirin to patients with a low-grade fever. Why not?

Accepted Answer

A)  Aspirin increases the release of pyrogens. 
B)  Fevers reduce bacterial reproduction rates. 
C)  Aspirin increases the activity of phagocytic white blood cells. 
D)  Fevers decrease the amount of interferon produced by the body. 
A)  Aspirin increases the release of pyrogens. 
B)  Fevers reduce bacterial reproduction rates. 
C)  Aspirin increases the activity of phagocytic white blood cells. 
D)  Fevers decrease the amount of interferon produced by the body.

Question 20

Pyrogens are produced by phagocytic white blood cells in response to infection. Pyrogens

Accepted Answer

A)  increase the concentration of iron in the blood. 
B)  are the chemicals that triggers an inflammatory response. 
C)  relax the smooth muscle of arterioles delivering blood to the site of infection. 
D)  kill bacteria by digesting their cell walls. 
E)  initiate an increase in body temperature. 
A)  increase the concentration of iron in the blood. 
B)  are the chemicals that triggers an inflammatory response. 
C)  relax the smooth muscle of arterioles delivering blood to the site of infection. 
D)  kill bacteria by digesting their cell walls. 
E)  initiate an increase in body temperature.

Exam 37: Defenses Against Disease

What mechanisms do natural killer cells use to destroy body cells that have been infected by cancer or a virus?

Phagocytes patrol the body?s tissues and ingest invading microbes. Phagocytic cells include macrophages, dendritic cells, and __________.

Type 1 diabetes is considered an autoimmune disease because the bodyʹs immune system attacks and destroys insulin-producing cells in the pancreas.

IgD, IgM, IgG, IgA, and IgE are types of white blood cells.

Macrophages

List the human bodyʹs three lines of defense against disease.

B cells mature in the bone marrow, whereas T cells migrate to the __________gland early in embryonic life, where they mature.

As shown in this figure, upon re-exposure to pollen, the pollen binds to

List the events that occur in an allergic reaction.

Why doesnʹt your immune system attack your own cells?

Which type of cell secretes antibodies into the blood?

When AIDS patients die, it is because

__________cells are immune system cells that mature in the bone marrow.

Inflammation occurs in response to chemicals, such as histamine, secreted by

Natural killer cells prevent viral infection by

Which of the following provides cell-mediated immunity?

HIV weakens a personʹs ability to fight off other infections by infecting and destroying helper T cells.

What three steps do all adaptive immune responses include?

Aspirin reduces fevers; however, many physicians do NOT recommend aspirin to patients with a low-grade fever. Why not?

Pyrogens are produced by phagocytic white blood cells in response to infection. Pyrogens

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

DNA: The Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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