Question 1

Which of the following statements is false?

Accepted Answer

A) Cytotoxic T cells kill body cells that have been invaded by pathogens. 
B) The cell-mediated response is ineffective against a pathogen that has already entered the cytoplasm of a body cell. 
C) Cytotoxic T cells are produced by the bone marrow but mature in the thymus gland. 
D) Cytotoxic T cells are unable to destroy free-floating viruses they encounter in the bloodstream. 
E) Cytotoxic T cells secrete perforins that are able to punch holes in infected cells. 
A) Cytotoxic T cells kill body cells that have been invaded by pathogens. 
B) The cell-mediated response is ineffective against a pathogen that has already entered the cytoplasm of a body cell. 
C) Cytotoxic T cells are produced by the bone marrow but mature in the thymus gland. 
D) Cytotoxic T cells are unable to destroy free-floating viruses they encounter in the bloodstream. 
E) Cytotoxic T cells secrete perforins that are able to punch holes in infected cells.

Question 2

Lysozyme

Accepted Answer

A) is secreted by endocrine glands in the skin. 
B) destroys the cell wall of invading bacteria. 
C) is produced in the lymph nodes and actively disables bacteria. 
D) is a very effective defense against viruses. 
E) is active within the circulatory system. 
A) is secreted by endocrine glands in the skin. 
B) destroys the cell wall of invading bacteria. 
C) is produced in the lymph nodes and actively disables bacteria. 
D) is a very effective defense against viruses. 
E) is active within the circulatory system.

Question 3

"Complement" refers to a set of specific

Accepted Answer

A) vaccines. 
B) defense proteins. 
C) antibodies. 
D) antibiotics. 
E) lymphocytes. 
A) vaccines. 
B) defense proteins. 
C) antibodies. 
D) antibiotics. 
E) lymphocytes.

Question 4

The immune system's attack on the body's own cells

Accepted Answer

A) is an autoimmune response. 
B) results in anaphylactic shock. 
C) is a type of acquired immune deficiency syndrome. 
D) is due to the inactivation of helper T cells. 
E) is due to an error in the production of MHC markers. 
A) is an autoimmune response. 
B) results in anaphylactic shock. 
C) is a type of acquired immune deficiency syndrome. 
D) is due to the inactivation of helper T cells. 
E) is due to an error in the production of MHC markers.

Question 5

Which of the following statements is false?

Accepted Answer

A) HIV is the virus that causes AIDS. 
B) The AIDS virus is a retrovirus. 
C) The AIDS virus attacks macrophages, dendritic cells, and helper T cells. 
D) Even though the AIDS virus does not have its own DNA, it causes the host to produce DNA that will become part of host chromosomes. 
E) Antibodies to the AIDS virus can be detected immediately after infection occurs. 
A) HIV is the virus that causes AIDS. 
B) The AIDS virus is a retrovirus. 
C) The AIDS virus attacks macrophages, dendritic cells, and helper T cells. 
D) Even though the AIDS virus does not have its own DNA, it causes the host to produce DNA that will become part of host chromosomes. 
E) Antibodies to the AIDS virus can be detected immediately after infection occurs.

Question 6

All of the following are autoimmune diseases EXCEPT

Accepted Answer

A) Graves' disease. 
B) multiple sclerosis. 
C) rheumatoid arthritis. 
D) AIDS. 
E) lupus. 
A) Graves' disease. 
B) multiple sclerosis. 
C) rheumatoid arthritis. 
D) AIDS. 
E) lupus.

Question 7

Cervical cancer

Accepted Answer

A) kills about 3,600 U.S.women each year. 
B) can affect young women. 
C) death occurs more often in women who have not had a pap smear. 
D) can be caused by genital HPV which has about 80% infectivity in sexually active women in the U.S. 
E) includes all of these. 
A) kills about 3,600 U.S.women each year. 
B) can affect young women. 
C) death occurs more often in women who have not had a pap smear. 
D) can be caused by genital HPV which has about 80% infectivity in sexually active women in the U.S. 
E) includes all of these.

Question 8

The antigen binds to the __________ of an antibody.

Accepted Answer

A) constant region 
B) neutral region 
C) variable region 
D) active site 
E) charged region 
A) constant region 
B) neutral region 
C) variable region 
D) active site 
E) charged region

Question 9

Which antibody is most commonly associated with an allergic reaction?

Accepted Answer

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

Question 10

Pre-cancerous and even early cervical cancer

Accepted Answer

A) can be removed if detected early enough. 
B) may be caused by HPV, a type of papillomavirus. 
C) can be detected by pap tests 
D) can often be prevented with a vaccine that can't be used to treat the disease. 
E) include all of these. 
A) can be removed if detected early enough. 
B) may be caused by HPV, a type of papillomavirus. 
C) can be detected by pap tests 
D) can often be prevented with a vaccine that can't be used to treat the disease. 
E) include all of these.

Question 11

T cells that bind to the antigen-MHC complexes of dendritic cells become activated and later

Accepted Answer

A) produce antibodies. 
B) become NK cells. 
C) bind to B macrophages activating them. 
D) differentiate into helper T cells and memory T cells. 
E) activate complement. 
A) produce antibodies. 
B) become NK cells. 
C) bind to B macrophages activating them. 
D) differentiate into helper T cells and memory T cells. 
E) activate complement.

Question 12

Which immunoglobulin is able to pass across the placenta to protect the fetus from pathogens?

Accepted Answer

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

Question 13

Vaccines can contain all of the following EXCEPT

Accepted Answer

A) a killed pathogen. 
B) a weakened pathogen. 
C) noninfective fragments of a pathogen. 
D) an unmodified antigen. 
E) inactivated bacterial toxins. 
A) a killed pathogen. 
B) a weakened pathogen. 
C) noninfective fragments of a pathogen. 
D) an unmodified antigen. 
E) inactivated bacterial toxins.

Question 14

Which of the following is NOT involved in fevers?

Accepted Answer

A) the hypothalamus 
B) increase in activity of phagocytes 
C) antihistamine 
D) cytokines 
E) prostaglandins 
A) the hypothalamus 
B) increase in activity of phagocytes 
C) antihistamine 
D) cytokines 
E) prostaglandins

Question 15

In AIDS, the body's reduced capacity for adaptive immunity is due directly to the destruction of __________ cells.

Accepted Answer

A) NK 
B) B 
C) helper T 
D) T 
E) dendritic 
A) NK 
B) B 
C) helper T 
D) T 
E) dendritic

Question 16

Which of the following is NOT involved in the development of acne?

Accepted Answer

A) excessive production of sebum   
B) Staphylococcus epidermidis 
C) dead skin cells 
D) hair follicles 
E) neutrophils 
A) excessive production of sebum   
B) Staphylococcus epidermidis 
C) dead skin cells 
D) hair follicles 
E) neutrophils

Question 17

Which of the following is (are) false regarding B cells with antigen-MHC complexes?

Accepted Answer

A) They are stimulated by helper T cells to secrete cytokines. 
B) Helper T cells signal them to divide and differentiate. 
C) On signals from the helper T cells, they produce clones with identical receptors. 
D) Once activated by signals from helper T cells, they produce IgG, IgA, or IgE immunoglobulins instead of membrane-bound IgM. 
E) All of these are true. 
A) They are stimulated by helper T cells to secrete cytokines. 
B) Helper T cells signal them to divide and differentiate. 
C) On signals from the helper T cells, they produce clones with identical receptors. 
D) Once activated by signals from helper T cells, they produce IgG, IgA, or IgE immunoglobulins instead of membrane-bound IgM. 
E) All of these are true.

Question 18

Antihistamines dampen the effect of allergic reactions by

Accepted Answer

A) blocking the production of histamines. 
B) blocking the release of histamines. 
C) blocking the effect of histamines. 
D) enzymatically destroying the histamines. 
E) none of these. 
A) blocking the production of histamines. 
B) blocking the release of histamines. 
C) blocking the effect of histamines. 
D) enzymatically destroying the histamines. 
E) none of these.

Question 19

Which of the following statements is false?

Accepted Answer

A) Individuals are injected with antibodies to produce passive immunity. 
B) A genetically engineered virus is not as potentially dangerous as a weakened but intact pathogen. 
C) Allergies occur when the body makes a strong immune response to a normally harmless substance. 
D) Allergies are a nuisance but are never dangerous or life threatening. 
E) An allergic response includes the secretion of mucus, prostaglandins, and histamines. 
A) Individuals are injected with antibodies to produce passive immunity. 
B) A genetically engineered virus is not as potentially dangerous as a weakened but intact pathogen. 
C) Allergies occur when the body makes a strong immune response to a normally harmless substance. 
D) Allergies are a nuisance but are never dangerous or life threatening. 
E) An allergic response includes the secretion of mucus, prostaglandins, and histamines.

Question 20

Which of the following is (are) true concerning antigen-presenting cells?

Accepted Answer

A) They may be macrophages. 
B) They may be B cells. 
C) They may be dendritic cells. 
D) They have antigen bound to their MHC markers. 
E) All of these are true. 
A) They may be macrophages. 
B) They may be B cells. 
C) They may be dendritic cells. 
D) They have antigen bound to their MHC markers. 
E) All of these are true.

Exam 38: Immunity

Which of the following statements is false?

Lysozyme

"Complement" refers to a set of specific

The immune system's attack on the body's own cells

Which of the following statements is false?

All of the following are autoimmune diseases EXCEPT

Cervical cancer

The antigen binds to the __________ of an antibody.

Which antibody is most commonly associated with an allergic reaction?

Pre-cancerous and even early cervical cancer

T cells that bind to the antigen-MHC complexes of dendritic cells become activated and later

Which immunoglobulin is able to pass across the placenta to protect the fetus from pathogens?

Vaccines can contain all of the following EXCEPT

Which of the following is NOT involved in fevers?

In AIDS, the body's reduced capacity for adaptive immunity is due directly to the destruction of __________ cells.

Which of the following is NOT involved in the development of acne?

Which of the following is (are) false regarding B cells with antigen-MHC complexes?

Antihistamines dampen the effect of allergic reactions by

Which of the following statements is false?

Which of the following is (are) true concerning antigen-presenting cells?

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

Energy-Releasing Pathways

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

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