Question 1

What causes malaria?

Accepted Answer

A)  viruses 
B)  plasmodium parasites 
C)  bacteria 
D)  parasitic worms 
A)  viruses 
B)  plasmodium parasites 
C)  bacteria 
D)  parasitic worms B

Question 2

Which of the following is a viral disease?

Accepted Answer

A)  tuberculosis 
B)  Lyme disease 
C)  influenza 
D)  malaria 
A)  tuberculosis 
B)  Lyme disease 
C)  influenza 
D)  malaria C

Question 3

What is a key characteristic of bacteria?

Accepted Answer

A)  They have a low reproductive rate. 
B)  They cannot adapt to changing environments. 
C)  They can develop resistance to antibiotics. 
D)  They are K-strategists. 
A)  They have a low reproductive rate. 
B)  They cannot adapt to changing environments. 
C)  They can develop resistance to antibiotics. 
D)  They are K-strategists. C

Question 4

What is a leading cause of death in developed countries?

Accepted Answer

A)  bacteria 
B)  environmental and lifestyle factors 
C)  vectors 
D)  viruses 
A)  bacteria 
B)  environmental and lifestyle factors 
C)  vectors 
D)  viruses

Question 5

What is a carcinogen?

Accepted Answer

chemicals or ionizin

Question 6

How toxic is a substance with an LD50 of 1 milligram/kilogram of body weight?

Accepted Answer

A)  essentially nontoxic 
B)  moderately toxic 
C)  toxic 
D)  extremely toxic 
A)  essentially nontoxic 
B)  moderately toxic 
C)  toxic 
D)  extremely toxic

Question 7

Which of the following is considered a cultural hazard?

Accepted Answer

A)  floods 
B)  drugs 
C)  drought 
D)  pollen 
A)  floods 
B)  drugs 
C)  drought 
D)  pollen

Question 8

Which of the following is part of the process of risk assessment?

Accepted Answer

A)  determining the types of hazards involved 
B)  informing decision makers and the public about risks 
C)  determining how much money should be spent 
D)  communicating risk to the general public 
A)  determining the types of hazards involved 
B)  informing decision makers and the public about risks 
C)  determining how much money should be spent 
D)  communicating risk to the general public

Question 9

AIDS
  
-How many more women between 20 and 24 years of age would live if AIDS could be eradicated?

Accepted Answer

The answer of AIDS
  
-How many more women between...

Question 10

Most case reports provide reliable sources for estimating the toxicity of harmful chemicals to humans.

Accepted Answer

A) True 
 B)False

Question 11

The three types of toxic chemicals are mutagens,teratogens,and carcinogens.

Accepted Answer

A) True 
 B)False

Question 12

Chemicals that accumulate in animal tissues can be biologically magnified in the bodies of other animals at each lower trophic level.

Accepted Answer

A) True 
 B)False

Question 13

A nonlinear dose response model applies if a harmful effect occurs when the dosage exceeds a threshold level.

Accepted Answer

A) True 
 B)False

Question 14

Case reports,epidemiological studies,and animal testing can all be used to estimate toxicity.

Accepted Answer

A) True 
 B)False

Question 15

The overuse of ____________________ can cause bacteria to develop immunity.

Accepted Answer

The answer of The overuse of ____________________ can cause bacteria...

Question 16

_________________________ includes comparative risk analysis,risk reduction,a risk reduction strategy,and a financial commitment.

Accepted Answer

The answer of _________________________ includes comparative risk analysis,risk reduction,a risk...

Question 17

What is the best reason for animal use in developing dose-response curves?

Accepted Answer

A)  It is non-controversial. 
B)  Researchers can extrapolate data from test animals to humans. 
C)  Researchers can extrapolate data from low-dose levels to high-dose levels. 
D)  It is usually nonlethal. 
A)  It is non-controversial. 
B)  Researchers can extrapolate data from test animals to humans. 
C)  Researchers can extrapolate data from low-dose levels to high-dose levels. 
D)  It is usually nonlethal.

Question 18

What medical problem is caused by carcinogens?

Accepted Answer

A)  birth defects 
B)  chronic health effects 
C)  cancer 
D)  genetic defects 
A)  birth defects 
B)  chronic health effects 
C)  cancer 
D)  genetic defects

Question 19

What is the best definition of a vector?

Accepted Answer

A)  an agent of disease transmission 
B)  a parasitic organism 
C)  a dosage level 
D)  an agent of infection 
A)  an agent of disease transmission 
B)  a parasitic organism 
C)  a dosage level 
D)  an agent of infection

Question 20

Which system can be severely disrupted when a person intakes synthetic mimics?

Accepted Answer

A)  the circulatory system 
B)  the digestive system 
C)  the endocrine system 
D)  the respiratory system 
A)  the circulatory system 
B)  the digestive system 
C)  the endocrine system 
D)  the respiratory system

Exam 19: Risk,toxicology,and Human Health

What causes malaria?

Which of the following is a viral disease?

What is a key characteristic of bacteria?

What is a leading cause of death in developed countries?

What is a carcinogen?

How toxic is a substance with an LD50 of 1 milligram/kilogram of body weight?

Which of the following is considered a cultural hazard?

Which of the following is part of the process of risk assessment?

AIDS -How many more women between 20 and 24 years of age would live if AIDS could be eradicated?

Most case reports provide reliable sources for estimating the toxicity of harmful chemicals to humans.

The three types of toxic chemicals are mutagens,teratogens,and carcinogens.

Chemicals that accumulate in animal tissues can be biologically magnified in the bodies of other animals at each lower trophic level.

A nonlinear dose response model applies if a harmful effect occurs when the dosage exceeds a threshold level.

Case reports,epidemiological studies,and animal testing can all be used to estimate toxicity.

The overuse of ____________________ can cause bacteria to develop immunity.

_________________________ includes comparative risk analysis,risk reduction,a risk reduction strategy,and a financial commitment.

What is the best reason for animal use in developing dose-response curves?

What medical problem is caused by carcinogens?

What is the best definition of a vector?

Which system can be severely disrupted when a person intakes synthetic mimics?

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Environmental History: Learning From the Past

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Ecosystems: What Are They, and How Do They Work

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Applying Population Ecology: the Human Population

Sustaining Terrestrial Biodiversity: Managing and Protecting Ecosystems

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