Question 1

-The figure shows the results of a toxicology study done on mice.Which of the following is a valid explanation for the results for an intermediate dose?

Accepted Answer

A) Animal tests do not replicate actual environments where people may be simultaneously exposed to multiple chemicals that may interact with one another. 
B) Some of the mice are given a greater dose of the substance than is given to other mice. 
C) Age and genetic differences may have resulted in mice having different responses to the dose. 
D) The intermediate dose was sufficiently toxic to kill all of the mice. 
A) Animal tests do not replicate actual environments where people may be simultaneously exposed to multiple chemicals that may interact with one another. 
B) Some of the mice are given a greater dose of the substance than is given to other mice. 
C) Age and genetic differences may have resulted in mice having different responses to the dose. 
D) The intermediate dose was sufficiently toxic to kill all of the mice. C

Question 2

Bisphenol A is ________________.

Accepted Answer

A) released from aerosol spray cans 
B) an insecticide that has been banned in Europe but is still available in the United States 
C) produced when fossil fuels are burned 
D) an endocrine disruptor used in plastic manufacturing 
A) released from aerosol spray cans 
B) an insecticide that has been banned in Europe but is still available in the United States 
C) produced when fossil fuels are burned 
D) an endocrine disruptor used in plastic manufacturing D

Question 3

You should never store strong acids in metal containers because acids are______________ .

Accepted Answer

A) ignitable 
B) corrosive 
C) reactive 
D) neurotoxic 
A) ignitable 
B) corrosive 
C) reactive 
D) neurotoxic B

Question 4

_____________can be defined as the probability of a harmful health impact.

Accepted Answer

A) Mortality 
B) Risk 
C) A hazard 
D) Toxicity 
A) Mortality 
B) Risk 
C) A hazard 
D) Toxicity

Question 5

Bioaccumulation is the___________ .

Accepted Answer

A) total amount of chemicals stored in the tissues of living organisms 
B) chemical change that occurs when substances are altered by the sun or metabolized by microorganisms 
C) increase in a pollutant's concentration as it moves up a food chain 
D) process by which chemicals are stored and concentrated in the tissues of living organisms 
A) total amount of chemicals stored in the tissues of living organisms 
B) chemical change that occurs when substances are altered by the sun or metabolized by microorganisms 
C) increase in a pollutant's concentration as it moves up a food chain 
D) process by which chemicals are stored and concentrated in the tissues of living organisms

Question 6

Radioactive iodide gas released from the Chernobyl nuclear accident in 1986 has been linked to__________ .

Accepted Answer

A) pancreatic cancer 
B) thyroid cancer 
C) teratogenic birth defects 
D) lung cancer 
A) pancreatic cancer 
B) thyroid cancer 
C) teratogenic birth defects 
D) lung cancer

Question 7

-The figure shows the results of a toxicology study done on mice.The LD50 is _________.

Accepted Answer

A) 20 mg 
B) 30 mg 
C) 10 mg 
D) 5 mg 
A) 20 mg 
B) 30 mg 
C) 10 mg 
D) 5 mg

Question 8

-The figure shows the results of a toxicology study done on mice.The threshold of toxicity for this substance is approximately__________ .

Accepted Answer

A) 8 mg 
B) 3 mg 
C) 20 mg 
D) 30 mg 
A) 8 mg 
B) 3 mg 
C) 20 mg 
D) 30 mg

Question 9

Which of the following is a neurotoxin shown to decrease IQ in children?

Accepted Answer

A) Lead 
B) Asbestos 
C) PCB 
D) BPA 
A) Lead 
B) Asbestos 
C) PCB 
D) BPA

Question 10

Explain and give an example of biomagnification.

Accepted Answer

When one organism ingests a harmful chem

Question 11

Which of the following diseases is caused by exposure to human wastes?

Accepted Answer

A) Cholera 
B) SARS 
C) Ebola 
D) Bovine spongiform encephalopathy 
A) Cholera 
B) SARS 
C) Ebola 
D) Bovine spongiform encephalopathy

Question 12

After initial testing on mice reveals that a new food coloring may be a carcinogen,researchers should next plan to examine the effects of different concentrations of the food coloring on mice in a type of____________ .

Accepted Answer

A) risk management 
B) dose-response analysis 
C) hazard identification 
D) exposure assessment 
A) risk management 
B) dose-response analysis 
C) hazard identification 
D) exposure assessment

Question 13

Of the following,for which would it be the most difficult to determine a discrete threshold level of exposure?

Accepted Answer

A) Drain cleaners 
B) Carcinogens 
C) Acids 
D) Arsenic 
A) Drain cleaners 
B) Carcinogens 
C) Acids 
D) Arsenic

Question 14

An_____________is defined as a chemical that causes birth defects.

Accepted Answer

A) toxin 
B) endocrine disruptor 
C) carcinogen 
D) teratogen 
A) toxin 
B) endocrine disruptor 
C) carcinogen 
D) teratogen

Question 15

In toxicology studies,LD50 is best described as ________________.

Accepted Answer

A) the dose at which at least 50% of the exposed population is not affected by the toxicant 
B) the dose at which 50% of an exposed population is killed 
C) the dose at which 50% of an exposed population develops a chronic effect from the toxicant 
D) the dose at which 50% of an exposed population develops disease 
A) the dose at which at least 50% of the exposed population is not affected by the toxicant 
B) the dose at which 50% of an exposed population is killed 
C) the dose at which 50% of an exposed population develops a chronic effect from the toxicant 
D) the dose at which 50% of an exposed population develops disease

Question 16

A recent study indicated that more than 60% of human pathogens are zoonoses,meaning that they___________ .

Accepted Answer

A) originate in humans and spread to various species of animals 
B) can be transmitted between animals and humans 
C) are transmitted via the sinuses and respiratory tracts of animals 
D) can infect any animal species 
A) originate in humans and spread to various species of animals 
B) can be transmitted between animals and humans 
C) are transmitted via the sinuses and respiratory tracts of animals 
D) can infect any animal species

Question 17

A carcinogen's danger lies in its effect on ___________.

Accepted Answer

A) the ability to absorb nutrients in the wall of the intestines 
B) oxygen-carrying red blood cells 
C) the ability of the lining of the lungs to absorb oxygen 
D) DNA 
A) the ability to absorb nutrients in the wall of the intestines 
B) oxygen-carrying red blood cells 
C) the ability of the lining of the lungs to absorb oxygen 
D) DNA

Question 18

_____________is the increased concentration of a chemical at each higher level of a food chain.

Accepted Answer

A) Bioaccumulation 
B) Teratogenation 
C) Intoxication 
D) Biomagnification 
A) Bioaccumulation 
B) Teratogenation 
C) Intoxication 
D) Biomagnification

Question 19

Picric acid is always stored wet,often in glass bottles in water.If the crystals dry out,they can explode.Therefore,picric acid demonstrates a high level of__________ .

Accepted Answer

A) toxicity 
B) reactivity 
C) corrosivity 
D) ignitability 
A) toxicity 
B) reactivity 
C) corrosivity 
D) ignitability

Question 20

Mercury is not readily excreted but rather is stored in animal body tissues.This is an example of___________ .

Accepted Answer

A) bioaccumulation 
B) toxification 
C) distillation 
D) biomagnification 
A) bioaccumulation 
B) toxification 
C) distillation 
D) biomagnification

-The figure shows the results of a toxicology study done on mice.Which of the following is a valid explanation for the results for an intermediate dose?

Bisphenol A is ________________.

You should never store strong acids in metal containers because acids are______________ .

_____________can be defined as the probability of a harmful health impact.

Bioaccumulation is the___________ .

Radioactive iodide gas released from the Chernobyl nuclear accident in 1986 has been linked to__________ .

-The figure shows the results of a toxicology study done on mice.The LD50 is _________.

-The figure shows the results of a toxicology study done on mice.The threshold of toxicity for this substance is approximately__________ .

Which of the following is a neurotoxin shown to decrease IQ in children?

Explain and give an example of biomagnification.

Which of the following diseases is caused by exposure to human wastes?

After initial testing on mice reveals that a new food coloring may be a carcinogen,researchers should next plan to examine the effects of different concentrations of the food coloring on mice in a type of____________ .

Of the following,for which would it be the most difficult to determine a discrete threshold level of exposure?

An_____________is defined as a chemical that causes birth defects.

In toxicology studies,LD50 is best described as ________________.

A recent study indicated that more than 60% of human pathogens are zoonoses,meaning that they___________ .

A carcinogen's danger lies in its effect on ___________.

_____________is the increased concentration of a chemical at each higher level of a food chain.

Picric acid is always stored wet,often in glass bottles in water.If the crystals dry out,they can explode.Therefore,picric acid demonstrates a high level of__________ .

Mercury is not readily excreted but rather is stored in animal body tissues.This is an example of___________ .

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Exam 11: Climate

-The figure shows the results of a toxicology study done on mice.Which of the following is a valid explanation for the results for an intermediate dose?

Bisphenol A is ________________.

You should never store strong acids in metal containers because acids are______________ .

_____________can be defined as the probability of a harmful health impact.

Bioaccumulation is the___________ .

Radioactive iodide gas released from the Chernobyl nuclear accident in 1986 has been linked to__________ .

-The figure shows the results of a toxicology study done on mice.The LD50 is _________.

-The figure shows the results of a toxicology study done on mice.The threshold of toxicity for this substance is approximately__________ .

Which of the following is a neurotoxin shown to decrease IQ in children?

Explain and give an example of biomagnification.

Which of the following diseases is caused by exposure to human wastes?

After initial testing on mice reveals that a new food coloring may be a carcinogen,researchers should next plan to examine the effects of different concentrations of the food coloring on mice in a type of____________ .

Of the following,for which would it be the most difficult to determine a discrete threshold level of exposure?

An_____________is defined as a chemical that causes birth defects.

In toxicology studies,LD50 is best described as ________________.

A recent study indicated that more than 60% of human pathogens are zoonoses,meaning that they___________ .

A carcinogen's danger lies in its effect on ___________.

_____________is the increased concentration of a chemical at each higher level of a food chain.

Picric acid is always stored wet,often in glass bottles in water.If the crystals dry out,they can explode.Therefore,picric acid demonstrates a high level of__________ .

Mercury is not readily excreted but rather is stored in animal body tissues.This is an example of___________ .

The Science of Sustainability

Environmental Policy

Economics and Values

Biodiversity and Evolution

Populations and Communities

Ecosystems and Biomes

Biogeochemical Cycles

Freshwater

Atmosphere and Air Pollution

Oceans

Human Populations

Land Use

Agriculture

Solid and Hazardous Waste

Human Health and the Environment

Energy Use

Nonrenewable Energy

Enewable Energy

Science Fundamentals

Filters