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Posted: January 31st, 2023
Phhe 351
Week 2: Environmental Toxicology
*Numbers correlate with end of chapter questions
3. Define the terms teratogen, xenobiotic, and carcinogen. (1/4 point)
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4. Explain the difference between toxins and toxicants. Give an example of each. How does a toxin differ from a poison? (1/2 point)
6. What determines the toxicity of a chemical? To what extend do you agree with the assumption that “all substances are poisons”? (1/2 point)
11. Define the terms dose and threshold. Draw a figure to illustrate a threshold. (1/4 point)
13. What is meant by the term risk assessment? Describe the steps that constitute risk assessment. Give an example of each step. (1/2 point)
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