Question 1

What is a natural killer cell? Explain the functioning of a natural killer cell.

Accepted Answer

Natural killer (NK) cells are a type of

Question 2

Which substance can destroy pathogens by chemically hydrolyzing them?

Accepted Answer

A)  Hydrochloric acid 
B)  Mucus 
C)  Enzymes 
D)  Sebum 
A)  Hydrochloric acid 
B)  Mucus 
C)  Enzymes 
D)  Sebum

Question 3

Describe the structure of an antibody molecule.

Accepted Answer

An antibody molecule, also known as an i

Question 4

Match each term with its corresponding definition.
-mechanisms that provide specific protection against types of bacteria or toxins

Accepted Answer

A) Phagocytosis 
B) Specific immunity 
C) Macrophage 
D) Antibody 
E) B cell
F)Nonspecific immunity
G)Antigen
H)T cell
I)Interferon 
A) Phagocytosis 
B) Specific immunity 
C) Macrophage 
D) Antibody 
E) B cell
F)Nonspecific immunity
G)Antigen
H)T cell
I)Interferon

Question 5

Which of the following can activate,or turn on,an inactive B cell?

Accepted Answer

A)  Binding to its specific antibody 
B)  Binding to its specific antigen 
C)  Helper T cell 
D)  All B cells are activated when an infant is born. 
A)  Binding to its specific antibody 
B)  Binding to its specific antigen 
C)  Helper T cell 
D)  All B cells are activated when an infant is born.

Question 6

The antibody associated with allergic reaction is:

Accepted Answer

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

Question 7

Explain how the AIDS virus seems to affect the immune system.

Accepted Answer

The AIDS virus, also known as HIV, affec

Question 8

The body's first line(s)of defense is(are)the:

Accepted Answer

A)  skin. 
B)  mucous membranes. 
C)  inflammatory response. 
D)  Both A and B are correct. 
A)  skin. 
B)  mucous membranes. 
C)  inflammatory response. 
D)  Both A and B are correct.

Question 9

Which of the following can activate complement?

Accepted Answer

A)  T cells 
B)  Interferon 
C)  Properdin 
D)  Lymphokine 
A)  T cells 
B)  Interferon 
C)  Properdin 
D)  Lymphokine

Question 10

Which substance produced by the skin contains pathogen-inhibiting agents?

Accepted Answer

A)  Hydrochloric acid 
B)  Mucus 
C)  Enzymes 
D)  Sebum 
A)  Hydrochloric acid 
B)  Mucus 
C)  Enzymes 
D)  Sebum

Question 11

Match each type of specific immunity with its description or example.
-a person has had the mumps and is protected from getting them again

Accepted Answer

A) Natural active immunity 
B) Natural passive immunity 
C) Artificial active immunity 
D) Artificial passive immunity 
A) Natural active immunity 
B) Natural passive immunity 
C) Artificial active immunity 
D) Artificial passive immunity

Question 12

Which antibody has 10 antigen-binding sites?

Accepted Answer

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

Question 13

Why is it difficult to predict the total number of AIDS cases?

Accepted Answer

Predicting the total number of AIDS (Acq

Question 14

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

Steven did not experience any symptoms o

Question 15

When a patient starts to have rejection problems with a transplanted organ,the problems are usually caused by:

Accepted Answer

A)  a B cell-mediated condition. 
B)  human leukocyte antigens (HALs). 
C)  self-antigens. 
D)  severe combined immune deficiency (SCI
D) . 
A)  a B cell-mediated condition. 
B)  human leukocyte antigens (HALs). 
C)  self-antigens. 
D)  severe combined immune deficiency (SCI
D) .

Question 16

The human immunodeficiency virus (HIV)damages the immune system by _____ cells.

Accepted Answer

A)  invading memory 
B)  invading T 
C)  overproduction of B 
D)  overproduction of plasma 
A)  invading memory 
B)  invading T 
C)  overproduction of B 
D)  overproduction of plasma

Question 17

Explain the apparent basis for autoimmune diseases.Give two examples of such diseases.

Accepted Answer

Autoimmune diseases occur when the body'

Question 18

Which is the best explanation of how complement-a group of about 20 inactive enzymes in the plasma and on cell surfaces-is activated and produces cytolysis?

Accepted Answer

A)  Complement is "turned on" by the presence of bacteria. 
B)  Complement is activated by antibodies to "drill a hole" into foreign cells, thus causing cytolysis. 
C)  Complement causes vasoconstriction and inhibits phagocytosis. 
D)  Both A and B are correct. 
A)  Complement is "turned on" by the presence of bacteria. 
B)  Complement is activated by antibodies to "drill a hole" into foreign cells, thus causing cytolysis. 
C)  Complement causes vasoconstriction and inhibits phagocytosis. 
D)  Both A and B are correct.

Question 19

Chris has very bad allergic reactions,especially in the springtime.He decided to seek medical help to overcome these reactions.A physician explained that Chris needed an antihistamine to limit the allergic symptoms.Explain why an antihistamine will help Chris be more comfortable while he is experiencing spring hay fever.

Accepted Answer

Antihistamines are a class of medication

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 24: B: Immune System

What is a natural killer cell? Explain the functioning of a natural killer cell.

Which substance can destroy pathogens by chemically hydrolyzing them?

Describe the structure of an antibody molecule.

Match each term with its corresponding definition. -mechanisms that provide specific protection against types of bacteria or toxins

Which of the following can activate,or turn on,an inactive B cell?

The antibody associated with allergic reaction is:

Explain how the AIDS virus seems to affect the immune system.

The body's first line(s)of defense is(are)the:

Which of the following can activate complement?

Which substance produced by the skin contains pathogen-inhibiting agents?

Match each type of specific immunity with its description or example. -a person has had the mumps and is protected from getting them again

Which antibody has 10 antigen-binding sites?

Why is it difficult to predict the total number of AIDS cases?

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.

When a patient starts to have rejection problems with a transplanted organ,the problems are usually caused by:

The human immunodeficiency virus (HIV)damages the immune system by _____ cells.

Explain the apparent basis for autoimmune diseases.Give two examples of such diseases.

Which is the best explanation of how complement-a group of about 20 inactive enzymes in the plasma and on cell surfaces-is activated and produces cytolysis?

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

A: Organization of the Body

B: Organization of the Body

A: The Chemical Basis of Life

B: The Chemical Basis of Life

A: Anatomy of Cells

B: Anatomy of Cells

Physiology of Cells

Cell Growth and Reproduction

Tissues

A: Skin and Its Appendages

B: Skin and Its Appendages

A: Skeletal Tissues

B: Skeletal Tissues

Skeletal System

A: Articulations

B: Articulations

A: Anatomy of the Muscular System

B: Anatomy of the Muscular System

A: Physiology of the Muscular System

B: Physiology of the Muscular System

A: Nervous System Cells

B: Nervous System Cells

A: Central Nervous System

B: Central Nervous System

Peripheral Nervous System

Autonomic Nervous System

A: Sense Organs

B: Sense Organs

Endocrine System

Endocrine Glands

Blood

Anatomy of the Cardiovascular System

A: Physiology of the Cardiovascular System

B: Physiology of the Cardiovascular System

Lymphatic System

A: Immune System

Stress

Anatomy of the Respiratory System

A: Physiology of the Respiratory System

B: Physiology of the Respiratory System

A: Anatomy of the Digestive System

B: Anatomy of the Digestive System

A: Physiology of the Digestive System

B: Physiology of the Digestive System

A: Nutrition and Metabolism

B: Nutrition and Metabolism

A: Urinary System

B: Urinary System

Fluid and Electrolyte Balance

Acid-Base Balance

Male Reproductive System

A: Female Reproductive System

B: Female Reproductive System

A: Growth and Development

B: Growth and Development

A: Genetics and Heredity

B: Genetics and Heredity

Filters