Question 1

As a society,we usually focus money and attention on health risks that are

Accepted Answer

A) most serious. 
B) easiest to clean up. 
C) most well publicized and frightening. 
D) easiest to research. 
A) most serious. 
B) easiest to clean up. 
C) most well publicized and frightening. 
D) easiest to research.

Question 2

The World Health Organization regards health as primarily a matter of ________ well being.

Accepted Answer

A) physical 
B) mental and physical 
C) social and mental 
D) physical,mental,and social 
E) physical and social 
A) physical 
B) mental and physical 
C) social and mental 
D) physical,mental,and social 
E) physical and social

Question 3

Highly persistent toxic chemicals

Accepted Answer

A) retain their toxicity as they cycle through the food chain and environment. 
B) lose their toxicity once released in the environment. 
C) accumulate within one organism but break down at higher trophic levels. 
D) are highly unusual among artificial chemicals. 
E) are usually not that toxic in their life span. 
A) retain their toxicity as they cycle through the food chain and environment. 
B) lose their toxicity once released in the environment. 
C) accumulate within one organism but break down at higher trophic levels. 
D) are highly unusual among artificial chemicals. 
E) are usually not that toxic in their life span.

Question 4

Most people do their own personal risk assessments based upon

Accepted Answer

A) scientific data. 
B) whimsical preference devoid of logic. 
C) logical reasoning about relative risks. 
D) personal biases and preferences as well as logic. 
E) statistical probabilities. 
A) scientific data. 
B) whimsical preference devoid of logic. 
C) logical reasoning about relative risks. 
D) personal biases and preferences as well as logic. 
E) statistical probabilities.

Question 5

The cutting of rainforests causes a lack of normal water flow into the soil.Puddles of water can stand for long periods.Which of the following statements best explains how rainforest destruction is closely tied with human morbidity and mortality?

Accepted Answer

A) The elimination of top consumers can favor disease-carrying organisms. 
B) Mosquitoes with an aquatic larval form spread many highly contagious diseases. 
C) The standing water is used for drinking and disease organisms in the water cause diarrhea. 
D) All of these explain the connection between rainforest destruction and human morbidity and mortality. 
A) The elimination of top consumers can favor disease-carrying organisms. 
B) Mosquitoes with an aquatic larval form spread many highly contagious diseases. 
C) The standing water is used for drinking and disease organisms in the water cause diarrhea. 
D) All of these explain the connection between rainforest destruction and human morbidity and mortality.

Question 6

A factor responsible for the fast spread of emergent diseases is high population density.

Accepted Answer

A) True 
 B)False

Question 7

The biomagnification of DDT demonstrates that

Accepted Answer

A) higher trophic level organisms can concentrate toxins in a type of "inverse biological pyramid." 
B) birds should not depend on fish for food. 
C) DDT is easily metabolized and excreted by most organisms. 
D) DDT is an extremely water-soluble material. 
E) water-soluble toxins are widespread. 
A) higher trophic level organisms can concentrate toxins in a type of "inverse biological pyramid." 
B) birds should not depend on fish for food. 
C) DDT is easily metabolized and excreted by most organisms. 
D) DDT is an extremely water-soluble material. 
E) water-soluble toxins are widespread.

Question 8

Which of the following statements is true?

Accepted Answer

A) If a substance is toxic,its toxicity is highly dependent on its form and where it is present in the environment. 
B) If a substance is toxic,it is equally toxic regardless of its form or where it is present in the environment. 
C) The most important factor in the toxicity of a substance is the route by which it enters our bodies. 
D) None of these statements are true. 
A) If a substance is toxic,its toxicity is highly dependent on its form and where it is present in the environment. 
B) If a substance is toxic,it is equally toxic regardless of its form or where it is present in the environment. 
C) The most important factor in the toxicity of a substance is the route by which it enters our bodies. 
D) None of these statements are true.

Question 9

Historically,the greatest threats to human health came from

Accepted Answer

A) carcinogenic or toxic chemicals. 
B) psychological stress factors due to crowding. 
C) pathogenic organisms. 
D) teratogenic chemicals. 
E) injuries (intentional and unintentional). 
A) carcinogenic or toxic chemicals. 
B) psychological stress factors due to crowding. 
C) pathogenic organisms. 
D) teratogenic chemicals. 
E) injuries (intentional and unintentional).

Question 10

The complex set of chemical markers and genetic switches that regulate gene function is called the

Accepted Answer

A) epigenome. 
B) genome. 
C) mutagen. 
D) chronic effect. 
E) carcinogen. 
A) epigenome. 
B) genome. 
C) mutagen. 
D) chronic effect. 
E) carcinogen.

Question 11

Which of the following would not be among the most important characteristics of chemicals in determining their environmental risks is/are

Accepted Answer

A) solubility. 
B) reactivity. 
C) persistence. 
D) toxicity. 
E) dose. 
A) solubility. 
B) reactivity. 
C) persistence. 
D) toxicity. 
E) dose.

Question 12

Pathogenic organisms are those that are susceptible to diseases.

Accepted Answer

A) True 
 B)False

Question 13

How are bioaccumulation and biomagnification different?

Accepted Answer

A) Bioaccumulation occurs in an individual,while biomagnification occurs through the food chain. 
B) Biomagnification occurs in an individual,while bioaccumulation occurs through the food chain. 
C) Bioaccumulation occurs in humans,while biomagnification occurs in animals in nature. 
D) Biomagnification involves storing substances in adipose tissue,while bioaccumulation refers to water soluble substances. 
E) Bioaccumulation is a regular cellular process,while biomagnification refers to toxic substances. 
A) Bioaccumulation occurs in an individual,while biomagnification occurs through the food chain. 
B) Biomagnification occurs in an individual,while bioaccumulation occurs through the food chain. 
C) Bioaccumulation occurs in humans,while biomagnification occurs in animals in nature. 
D) Biomagnification involves storing substances in adipose tissue,while bioaccumulation refers to water soluble substances. 
E) Bioaccumulation is a regular cellular process,while biomagnification refers to toxic substances.

Question 14

Policy makers should utilize a(n)________ approach to setting environmental risk standards.

Accepted Answer

A) zero tolerance 
B) precautionary 
C) case-by-case 
D) restrictive 
A) zero tolerance 
B) precautionary 
C) case-by-case 
D) restrictive

Question 15

Which of the following is an example of a neurotoxin?

Accepted Answer

A) malaria 
B) formaldehyde 
C) mercury 
D) DDT 
A) malaria 
B) formaldehyde 
C) mercury 
D) DDT

Question 16

Which of the following presents the lowest lifetime risk of death to people in the US?

Accepted Answer

A) poisonous snakes 
B) dog bites 
C) plane crashes 
D) lightning 
E) drowning 
A) poisonous snakes 
B) dog bites 
C) plane crashes 
D) lightning 
E) drowning

Question 17

An LD50 (lethal dose 50%)is a dose of a toxic chemical that

Accepted Answer

A) is an acceptable level of risk for most individuals. 
B) all individuals react to. 
C) kills individuals 50 years old and over. 
D) is 50 times less than the minimal dose. 
E) kills half of the population. 
A) is an acceptable level of risk for most individuals. 
B) all individuals react to. 
C) kills individuals 50 years old and over. 
D) is 50 times less than the minimal dose. 
E) kills half of the population.

Question 18

Examples of POPs,persistent organic pollutants,include all of the following except

Accepted Answer

A) phthalates. 
B) perchlorate. 
C) PDBEs. 
D) PFOs. 
E) phosphates. 
A) phthalates. 
B) perchlorate. 
C) PDBEs. 
D) PFOs. 
E) phosphates.

Question 19

Estrogen-like compounds that can disrupt normal cellular function are called a/an

Accepted Answer

A) endocrine disruptor. 
B) mutagen. 
C) carcinogen. 
D) teratogen. 
E) antigen. 
A) endocrine disruptor. 
B) mutagen. 
C) carcinogen. 
D) teratogen. 
E) antigen.

As a society,we usually focus money and attention on health risks that are

The World Health Organization regards health as primarily a matter of ________ well being.

Highly persistent toxic chemicals

Most people do their own personal risk assessments based upon

The cutting of rainforests causes a lack of normal water flow into the soil.Puddles of water can stand for long periods.Which of the following statements best explains how rainforest destruction is closely tied with human morbidity and mortality?

A factor responsible for the fast spread of emergent diseases is high population density.

The biomagnification of DDT demonstrates that

Which of the following statements is true?

Historically,the greatest threats to human health came from

The complex set of chemical markers and genetic switches that regulate gene function is called the

Which of the following would not be among the most important characteristics of chemicals in determining their environmental risks is/are

Pathogenic organisms are those that are susceptible to diseases.

How are bioaccumulation and biomagnification different?

Policy makers should utilize a(n)________ approach to setting environmental risk standards.

Which of the following is an example of a neurotoxin?

Which of the following presents the lowest lifetime risk of death to people in the US?

An LD50 (lethal dose 50%)is a dose of a toxic chemical that

Examples of POPs,persistent organic pollutants,include all of the following except

Estrogen-like compounds that can disrupt normal cellular function are called a/an

Understanding Our Environment

Environmental Systems: Matter,energy,and Life

Evolution,species Interactions,and Biological Communities

Human Populations

Biomes and Biodiversity

Environmental Conservation: Forests,grasslands,parks,and Nature Preserves

Food and Agriculture

Climate

Air Pollution

Water: Resources and Pollution

Environmental Geology and Earth Resources

Energy

Solid and Hazardous Waste

Economics and Urbanization

Environmental Policy and Sustainability

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Exam 8: Environmental Health and Toxicology

As a society,we usually focus money and attention on health risks that are

The World Health Organization regards health as primarily a matter of ________ well being.

Highly persistent toxic chemicals

Most people do their own personal risk assessments based upon

The cutting of rainforests causes a lack of normal water flow into the soil.Puddles of water can stand for long periods.Which of the following statements best explains how rainforest destruction is closely tied with human morbidity and mortality?

A factor responsible for the fast spread of emergent diseases is high population density.

The biomagnification of DDT demonstrates that

Which of the following statements is true?

Historically,the greatest threats to human health came from

The complex set of chemical markers and genetic switches that regulate gene function is called the

Which of the following would not be among the most important characteristics of chemicals in determining their environmental risks is/are

Pathogenic organisms are those that are susceptible to diseases.

How are bioaccumulation and biomagnification different?

Policy makers should utilize a(n)________ approach to setting environmental risk standards.

Which of the following is an example of a neurotoxin?

Which of the following presents the lowest lifetime risk of death to people in the US?

An LD50 (lethal dose 50%)is a dose of a toxic chemical that

Examples of POPs,persistent organic pollutants,include all of the following except

Estrogen-like compounds that can disrupt normal cellular function are called a/an

Understanding Our Environment

Environmental Systems: Matter,energy,and Life

Evolution,species Interactions,and Biological Communities

Human Populations

Biomes and Biodiversity

Environmental Conservation: Forests,grasslands,parks,and Nature Preserves

Food and Agriculture

Climate

Air Pollution

Water: Resources and Pollution

Environmental Geology and Earth Resources

Energy

Solid and Hazardous Waste

Economics and Urbanization

Environmental Policy and Sustainability

Filters