Question 1

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.E) C) and D)
F) B) and D)

Question 2

SARS (Severe Acute Respiratory Syndrome) and Ebola fever are examples of emergent diseases.

Accepted Answer

A) True 
 B)False

Question 3

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.F) A) and B)
G) C) and E)

Question 4

The EPA usually assumes an acceptable risk for environmental hazards is about 1 in

Accepted Answer

A)   100
B)   1000
C)   10,000
D)   100,000
E)   1 millionF) All of the above
G) A) and D)

Question 5

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 socialF) A) and D)
G) A) and C)

Question 6

Based on what you know of risk assessment, which of the following factors would not explain the seemingly irrational behavior of a father who smokes (high risk factor for baby)  throwing away his baby's teething rings that may contain phthalates (seemingly low risk factor for baby) .

Accepted Answer

A)   People tend to downplay risks that are associated with activities they are committed to or enjoy.
B)   Most people do not understand the concepts of probability.
C)   News media can give a biased view of hazards.
D)   People tend to have an irrational fear of certain technologies that are not as well understood.
E)   People recognize the risk of man-made objects but not those of natural (tobacco)  objects.F) C) and E)
G) A) and B)

Question 7

A chemical that causes abnormalities in a growing fetus is called a(n)

Accepted Answer

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

Question 8

An allergen

Accepted Answer

A)   is a toxic substance.
B)   is a natural pathogen.
C)   over-stimulates the immune system.
D)   attacks the nervous system.E) C) and D)
F) All of the above

Question 9

Two problems encountered in human health risk assessment are _______________________ and ___________________.

Accepted Answer

A)   use of chemical mixtures; lack of knowledge about synergistic effects
B)   lack of funding for federal mandates; lack of public support
C)   extrapolation of data to low doses; extrapolation of data from non-human species to humans
D)   lack of planning; the involvement of politicsE) A) and B)
F) A) and C)

Question 10

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.F) B) and D)
G) C) and D)

Question 11

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.E) A) and B)
F) B) and C)

Question 12

With respect to exposure to toxins which statement is correct?

Accepted Answer

A)   Acute effects are much worse than chronic effects.
B)   Acute effects are not as bad as chronic effects.
C)   Acute effects are the immediate results of a single exposure, chronic effects are those that are long-lasting.
D)   Acute effects are permanent, chronic effects may be short or long term but go away over time.E) B) and D)
F) A) and C)

Question 13

Hazardous substances ______________ while toxins are ______________.

Accepted Answer

A)   react with specific cell components to kill cells; poisonous substances
B)   are dangerous substances; poisonous substances
C)   are usually of concern at all concentrations; are dangerous substances
D)   All of these are true.E) A) and B)
F) A) and D)

Exam 8: Environmental Health and Toxicology

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

Correct Answer
verified

Based on what you know of risk assessment, which of the following factors would not explain the seemingly irrational behavior of a father who smokes (high risk factor for baby) throwing away his baby's teething rings that may contain phthalates (seemingly low risk factor for baby) .

Correct Answer
verified

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

Correct Answer
verified

Most people do their own personal risk assessments based upon

Correct Answer
verified

SARS (Severe Acute Respiratory Syndrome) and Ebola fever are examples of emergent diseases.

Correct Answer
verified

The EPA usually assumes an acceptable risk for environmental hazards is about 1 in

Correct Answer
verified

A chemical that causes abnormalities in a growing fetus is called a(n)

Correct Answer
verified

Hazardous substances while toxins are .

Correct Answer
verified

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

Correct Answer
verified

An allergen

Correct Answer
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Which of the following statements is true?

Correct Answer
verified

Two problems encountered in human health risk assessment are _____ and _.

Correct Answer
verified

With respect to exposure to toxins which statement is correct?

Correct Answer
verified

Exam 8: Environmental Health and Toxicology

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

Correct AnswerverifiedShow Answer

Based on what you know of risk assessment, which of the following factors would not explain the seemingly irrational behavior of a father who smokes (high risk factor for baby) throwing away his baby's teething rings that may contain phthalates (seemingly low risk factor for baby) .

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Most people do their own personal risk assessments based upon

Correct AnswerverifiedShow Answer

SARS (Severe Acute Respiratory Syndrome) and Ebola fever are examples of emergent diseases.

Correct AnswerverifiedShow Answer

The EPA usually assumes an acceptable risk for environmental hazards is about 1 in

Correct AnswerverifiedShow Answer

A chemical that causes abnormalities in a growing fetus is called a(n)

Correct AnswerverifiedShow Answer

Hazardous substances ______________ while toxins are ______________.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

An allergen

Correct AnswerverifiedShow Answer

Which of the following statements is true?

Correct AnswerverifiedShow Answer

Two problems encountered in human health risk assessment are _______________________ and ___________________.

Correct AnswerverifiedShow Answer

With respect to exposure to toxins which statement is correct?

Correct AnswerverifiedShow Answer

Correct Answer
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Hazardous substances while toxins are .

Correct Answer
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Two problems encountered in human health risk assessment are _____ and _.

Correct Answer
verified

Correct Answer
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