CHS 330 Quiz #1

Which of the following is usually NOT studied by toxicologists? a. Hospital administration b. Rat nerve cells c. Mice d. Human liver cells

A. Hospital administration

True or False: The term toxicology refers to the study of adverse effects of chemicals on living organisms.

True

Identify the LOEL a. 3 b. 4 c. 2 d. 5 e. 1

a. 3

Which of the following statements regarding ecological system is WRONG? a. Ecological systems are not determinate to the survival of the human population. b. An ecological system is a dynamic complex of plant, animal and microorganism communities and nonliving environment as a functional unit. c. Ecological systems vary enormously in size. d. Degradation of ecosystems poses environmental dangers

a. Ecological systems are not determinate to the survival of the human population.

Which of the following is NOT part of the IPAT model? a. International b. Population c. Technology d. Affluence

a. International

Identify the NOEL a. 4 b. 2 c. 3 d. 1 e. 5

b. 2

Which of the following usually does NOT take the threshold assumptions? a. Neurotoxicity b. Cancer c. Hepatoxicity d. Developmental toxicity

b. Cancer

Which of the following statements is CORRECT? a. Dose is not an important concept in toxicology. b. To describe toxic effects, toxicologists use the symbol LD50 (lethal dose 50), which is "the dosage (mg/kg body weight) causing death in 50 percent of exposed animals". c. As long as the same amount of chemical was ingested, the dose will be the same across a diverse population. d. Given the same doses, children and adults are affected at the same level.

b. To describe toxic effects, toxicologists use the symbol LD50 (lethal dose 50), which is "the dosage (mg/kg body weight) causing death in 50 percent of exposed animals".

Which of the following is NOT a topic in environmental health? a. Nuclear power b. Pesticide and herbicides c. Hazardous waste d. Child education

d. Child education

Which of the following is NOT a current and continuing threat to the environment of the United States: a. Air pollution in some areas. b. Polluted water affecting both the health of both human and ecosystem. c. Hazardous wastes leaching from disposal sites. d. International terrorist organizations.

d. International terrorist organizations