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MATCHING - In the space provided, write the letter of the description that best matches the term or phrase.______ 1. organism that causes disease______ 2. study of the harmful effects of substances on organisms______ 3. study of the spread of disease______ 4. particles in the air that are small enough to breathe into the lungs______ 5. amount of a particular chemical to which a person is exposed______ 6. transmitter of a disease to people______ 7. organism in which a pathogen lives all or part of its life______ 8. estimate of the risk posed by an action or substance______ 9. previously unknown cause of disease______10. shows the relative effect of various doses of a drug or chemical on an organism a. toxicologyb. dosec. dose-response curved. epidemiologye. risk assessmentf. particulatesg. pathogenh. hosti. vectorj. emerging virus MULTIPLE CHOICE - In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question. ______11. Which of the following pollutants is used in agriculture and landscaping and might cause nerve damage, birth defects, and cancer in humans?a. particulate matterb. leadc. pesticidesd. bacteria ______12. Which of the following pollutants is found in old paint and gasoline and can cause brain damage and learning problems?a. particulate matterb. leadc. coal dustd. pesticides ______13. Toxicology is used to determinea. the classification of a pathogen.b. the vectors of a disease.c. how poisonous a substance is.d. what emerging viruses cause disease. ______14. After an outbreak of an illness, scientists use epidemiology to try to finda. the origin of the disease.b. how the disease spreads.c. how to prevent the disease from spreading.d. All of the above ______15. Radon, a pollutant that causes cancer, comes froma. cigarette smoke.b. granite bedrock.c. processed foods.d. drinking water. ______16. What percentage of commercial chemicals have been tested for toxicity?a. 10 percentb. 30 percentc. 50 percentd. 90 percent ______17. Which of the following statements is correct?a. Landfills solved pollution problems caused by waste disposal.b. Wastewater from cities no longer carries toxic chemicals into waterways.c. Laws regulating waste disposal have put an end to pollution problems caused by wastes.d. Much of the pollution in our environment is a byproduct of inadequate waste disposal. ______18. The environment is an important factor in the spread of cholera and dysentery becausea. air can carry the pathogens.b. water provides a habitat in which the pathogens breed.c. the pathogens reproduce in soil.d. the disease is transmitted by mosquitoes. ______19. Which of the following environmental changes is most likely to lead to the spread of parasites such as hookworm?a. overuse of pesticidesb. global warmingc. overuse of antibioticsd. soil erosion ______20. Which of the following is an emerging virus?a. West Nileb. measlesc. diphtheriad. schistosomiasis
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