PUBH6034 Module 1 Quiz Latest 2020/Verified Answer/All correct/ Score 100%

PUBH6034 Module 1 Quiz Latest 2020

Question 1

In environmental health, the term toxin refers to a toxic substance that _______________.

is naturally produced by a plant or animal

occurs in the occupational setting

results from human activity

a man-made product introduced into the environment due to human activity

Question 2

In toxicity testing in rodents, the LD50 is a dose that is _______________.

acutely fatal to 50 percent of test animals

fatal to 50 percent of test animals within a 90-day period

fatal to 50 percent of test animals after lifetime bioaccumulation

Question 3

Which of the following is not characteristic of a health impact assessment?

It evaluates a site or activity as it is, rather than looking forward in time

It includes social and economic factors in the assessment

It incorporates input from community members

Question 4

An exposure pathway connects _______________ to _______________.

an exposure / a change in tissue structure or function

inhalation / absorption

the environmental source of a contaminant / the point of exposure

Question 5

The three major routes of human exposure to environmental contaminants are

_______________.