Question 1

SARS and Ebola fever are examples of emergent diseases.

Accepted Answer

A) True 
 B)False

Question 2

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

Accepted Answer

A) True 
 B)False

Question 3

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 politics
E)   There are no inherent problems in human health risk assessment.F) B) and D)
G) A) and D)

Question 4

Historically, which of the following considerations in setting standards for toxic exposure has been emphasized the least?

Accepted Answer

A)   Information about how toxins affect natural ecological systems.
B)   Different members of the population have different sensitivities to toxins.
C)   Information about both chronic and acute exposures to a toxin.
D)   Individuals in the human population have been exposed to many different kinds of toxins that may have additive or synergistic effects.
E)   All of these considerations have been used and are important in setting policy.F) B) and E)
G) C) and D)

Question 5

Detection of toxic chemicals depends upon

Accepted Answer

A)   how many chemicals are present.
B)   how many individuals respond to them at a certain dosage.
C)   the sensitivity of measuring techniques and how many chemicals are present.
D)   whether or not individuals or groups of individuals are sensitive to them.
E)   whether or not groups of individuals are sensitive to them.F) B) and E)
G) A) and B)

Question 6

Diseases such as the recent outbreak of cholera and Ebola are

Accepted Answer

A)   caused by pathogenic organisms.
B)   called communicable diseases.
C)   called emergent diseases.
D)   happening more often in the past 20 years.
E)   All of these are characteristics of diseases such as cholera and Ebola.F) A) and D)
G) D) and E)

Question 7

An advantage of testing for toxicity by exposing animals to chemicals is that using animals is

Accepted Answer

A)   cheaper than other methods.
B)   faster than other methods.
C)   usually quite humane.
D)   easier than using computer models.
E)   a trusted and usually reliable way to get results.F) A) and D)
G) C) and D)

Question 8

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) C) and D)
G) B) and C)

Question 9

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

Question 10

In 1918 a flu pandemic killed more than 50 million people.

Accepted Answer

A) True 
 B)False

Question 11

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)   Mice populations increase because of a higher access to water and spread many highly contagious diseases.
E)   All of these explain the connection between rainforest destruction and human morbidity and mortality.F) B) and E)
G) None of the above

Question 12

Infectious diseases such as diarrhea are closely linked to

Accepted Answer

A)   emotional stress.
B)   malnutrition.
C)   toxicity effects.
D)   the over consumption of fats.
E)   All of these exacerbate infectious diseases such as diarrhea.F) A) and B)
G) B) and C)

Exam 8: Environmental Health and Toxicology

Diseases such as the recent outbreak of cholera and Ebola are

Correct Answer
verified

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

Correct Answer
verified

Infectious diseases such as diarrhea are closely linked to

Correct Answer
verified

Historically, which of the following considerations in setting standards for toxic exposure has been emphasized the least?

Correct Answer
verified

An advantage of testing for toxicity by exposing animals to chemicals is that using animals is

Correct Answer
verified

In 1918 a flu pandemic killed more than 50 million people.

Correct Answer
verified

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

Correct Answer
verified

Highly persistent toxic chemicals

Correct Answer
verified

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

Correct Answer
verified

Detection of toxic chemicals depends upon

Correct Answer
verified

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?

Correct Answer
verified

SARS and Ebola fever are examples of emergent diseases.

Correct Answer
verified

Exam 8: Environmental Health and Toxicology

Diseases such as the recent outbreak of cholera and Ebola are

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Infectious diseases such as diarrhea are closely linked to

Correct AnswerverifiedShow Answer

Historically, which of the following considerations in setting standards for toxic exposure has been emphasized the least?

Correct AnswerverifiedShow Answer

An advantage of testing for toxicity by exposing animals to chemicals is that using animals is

Correct AnswerverifiedShow Answer

In 1918 a flu pandemic killed more than 50 million people.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Highly persistent toxic chemicals

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Detection of toxic chemicals depends upon

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

SARS and Ebola fever are examples of emergent diseases.

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
verified

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

Correct Answer
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Correct Answer
verified

Correct Answer
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