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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 _______________. by air, water, and soil environmental, occupational, and residential ingestion, inhalation, and dermal contact Question 6 : The phrase contact with the human envelope is a common definition of _______________. absorption disposition exposure Question 7 : The quantity of a toxicant (or its breakdown product) that is available to interact with some vulnerable tissue in the body is called the _______________. absorbed dose biologically effective dose body burden Question 8 : The body burden of a chemical in the body reflects the net effect of _______________. absorption and biological effectiveness synergism and antagonism the processes of toxicokinetics Question 9 : Bioaccumulation is the _______________. gradual building up of a chemical in the tissue of an organism increase of concentrations of a chemical at higher levels of a food pyramid movement of a chemical from water to living tissue Question 10 : Which of the following is an example of a biomarker? Body mass index calculated from measured height and weight Concentration of a pesticide in blood Inhalation rate in liters per hour Question 11 : The Ames test is a test of a chemical's _______________. acute lethality, and is conducted in rodents mutagenicity, and is conducted in bacteria teratogenic potential, and is conducted mammalian cells Question 12 : Exposure modeling is used to estimate the _______________. biologically effective dose of a toxicant fate and transport of a toxicant ingestion of, inhalation of, or dermal contact with a toxicant Question 13 : Conceptually, a reference dose is a dose that has no adverse effects in _______________. sensitive subpopulations over a long-term exposure sensitive subpopulations over a short-term exposure the general population over a long-term exposure the general population over a short-term exposure Question 14 : Which of the following is one of the major processes which together make up toxicokinetics? Bioconcentration Distribution Mutation Synergism Question 15 : In doing a risk assessment for a chemical, the usual assumption is that _______________. carcinogenicity has a threshold; non-cancer effects do not non-cancer effects have a threshold; carcinogenicity does not both carcinogenicity and non-cancer effects have thresholds neither carcinogenicity nor non-cancer effects has a threshold
Short Paper on Cross-cultural Opportunities and Conflicts in Canada.
Sociology are very fundamental in nature. Role strain and role constraint speak about the duties and responsibilities of the roles of people in society or in a group. A short theory about Darwin and Moths is also answered.
This review will help the reader understand the social work profession through different concepts giving the glimpse of why the social work profession might have drifted away from its original purpose of serving the poor.
Schizophrenia does not really have just one single cause. It is a possibility that this disorder could be inherited but not all doctors are sure.
Individual Assignment : Two Models Handout and Rubric, This paper will allow you to understand and evaluate two vastly different organizational models and to effectively communicate their differences.
The following report includes the description about the organization, its strategies, industry analysis in which it operates and its position in the industry.
In this study, we examine how gasoline price volatility and income of the consumers impacts consumer's demand for gasoline.
Economics thesis undergrad 4th year paper to write. it should be about 22 pages in length, literature review, economic analysis and then data or cost benefit analysis.
The paper aims to highlight the global trends in countries and regions where 3G has already been introduced and propose an implementation plan to the telecom operators of developing countries.
Prepare the power point presentation for the case: Santa Fe Independent School District
Information literacy is critically important in this contemporary environment
Write a definition for associative property of multiplication.
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