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Environmental Toxicology MCQs

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1. What is the study of the effects of toxic substances on living organisms in their environment?





2. What term describes the concentration of a toxic substance in an organism relative to its concentration in the environment?





3. What is the term for the process by which the concentration of a toxic substance increases as it moves up the food chain?





4. What is the term for the study of the effects of chemicals on human health and the environment?





5. What term refers to the dose of a toxic substance that causes the death of 50% of a test population?





6. What is the term for the measurement of the concentration of a chemical in a biological system?





7. What is the term for the study of how toxic substances move through the environment and affect living organisms?





8. What is the term for the process by which a toxic substance is broken down in an organism?





9. What is the term for a substance that causes cancer?





10. What is the term for a substance that causes birth defects?





11. What is the term for a chemical that interferes with the normal function of hormones in the body?





12. What term refers to the study of the effects of toxic substances on plant life?





13. What is the term for the process by which organisms convert toxic substances into less harmful compounds?





14. What is the term for a toxic substance that affects the nervous system?





15. What is the term for a chemical that affects the liver?





16. What is the term for a chemical that affects the kidneys?





17. What is the term for the concentration of a toxic substance that causes adverse effects in 50% of a population?





18. What term refers to the amount of a chemical that causes no observable adverse effect?





19. What is the term for the level of exposure to a toxic substance that causes observable adverse effects?





20. What term describes the variation in susceptibility to a toxic substance among different individuals or populations?





21. What is the term for the study of the effects of pollutants on ecosystems?





22. What is the term for the process by which a toxic substance is absorbed into the body?





23. What is the term for the elimination of a toxic substance from the body?





24. What is the term for the alteration of a toxic substance in the body that makes it less harmful?





25. What is the term for the process by which toxic substances are converted into less harmful compounds in the environment?





26. What is the term for a substance that causes genetic mutations?





27. What is the term for the measure of a chemical’s potential to cause harm to living organisms?





28. What is the term for a chemical that is persistent in the environment and can accumulate in the food chain?





29. What is the term for the harmful effects of a toxic substance on aquatic life?





30. What is the term for the measure of the likelihood that a chemical will cause an adverse effect?





31. What is the term for the ability of a toxic substance to cause harm at low concentrations?





32. What is the term for a chemical that can cause reproductive harm?





33. What is the term for the study of the effects of toxic substances on the development of organisms?





34. What is the term for the process by which an organism’s internal environment is altered by a toxic substance?





35. What is the term for the process by which a toxic substance is distributed throughout the body?





36. What is the term for the study of the effects of environmental contaminants on human health?





37. What is the term for the degree to which a substance can cause an adverse effect after exposure?





38. What is the term for chemicals that are released into the environment and can be harmful to human health and the ecosystem?





39. What is the term for a chemical that has the potential to cause harm at a specific dose?





40. What is the term for the study of how environmental factors influence the risk of disease?





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