Question 1

What are re-emerging diseases, and why do they occur?

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Question 2

Compare and contrast the following terms: risk assessment and risk management.

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Question 3

Compare and contrast LD50 and ED50. How are these values used to evaluate and/or regulate chemical pollutants?

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Question 4

What is the precautionary principle? Identify one way in which this principle has created international controversy.

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Question 5

Briefly explain the term ecological risk assessment. Identify one environmental problem being addressed by an ecological risk assessment.

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Question 6

How do health care professionals define obesity? Identify two health risks associated with obesity.

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Question 7

Environmental contaminants are linked to ALL of the following serious diseases EXCEPT:

Accepted Answer

Malaria is not caused by environmental contaminants, but rather by a parasite transmitted through infected mosquitoes. Cancer, birth defects, reproductive problems, and damage to the nervous system have all been linked to exposure to environmental pollutants.

Question 8

Which of the following issues does not fall within the realm of Ecotoxicology?

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Question 9

There is good news and bad news regarding the health and well-being of people in developing countries. Discuss two improving health issues for people in developing countries and two serious health risks.

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Question 10

Define acute toxicity. How is this different from chronic toxicity?

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Question 11

Compare and contrast bioaccumulation and biological magnification.

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Question 12

Briefly explain what a dose-response curve is and how it is applied in determining the health effects of environmental pollutants.

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Question 13

Discuss the pesticide risks to human health, including short-term effects of exposure to high levels, long-term effects of exposure to low levels, the risks to children, and the role of pesticides as endocrine disrupters.

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Question 14

If a chemical with a toxicity level of 1 is mixed with a different chemical with a toxicity level of 1, the combined effect of exposure to the mixture is 2. This is an example of:

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The combined effect of the two chemicals equals the sum of their individual effects (1 + 1 = 2), which is an example of additivity. This means the effects of the chemicals when combined are exactly what one would expect based on their individual effects, without any amplification or reduction in effect.

Question 15

"An ounce of prevention is worth a pound of cure." This statement is the heart of the

Accepted Answer

The statement "an ounce of prevention is worth a pound of cure" is a principle that emphasizes the importance of taking preventative measures to avoid problems or harm. This is known as the precautionary principle, which encourages precautionary actions to prevent harmful effects, even if there is uncertainty about the likelihood or severity of those effects.

Quiz 7: Human Health and Environmental Toxicology