Asked by Johnny Guittard on Jun 13, 2024
Verified
Which of the following statements is true about determining exposure levels of toxins?
A) Since there is considerable uncertainty involved, exposure levels are set at 1/100 or even 1/1000 of the level expected to cause harm.
B) Since toxic exposure levels can be determined with great accuracy, limits tend to be set just under the harmful level to accommodate the chemical and pharmaceutical industries.
C) Since the actions of toxins, and combinations of various toxins, are well understood, there is no need for continued toxicity studies involving humans or other animals.
D) Citizens can rest assured that there will be no surprises arising from the toxic effects of chemicals, or combinations of chemicals, because of the extreme certainties arising from the toxicity studies done to date.
Exposure Levels
The degrees or amount of exposure to a particular substance, condition, or agent that an organism or ecological system experiences.
Toxins
Harmful substances produced by living organisms, including plants, animals, fungi, and bacteria, that can cause disease or damage when absorbed or ingested by others.
Uncertainty
The state of having limited knowledge where it is impossible to exactly describe the existing state, a future outcome, or more than one possible outcome.
- Clarify the significance of dose-response curves in the determination of toxic properties of substances.
Verified Answer
Learning Objectives
- Clarify the significance of dose-response curves in the determination of toxic properties of substances.
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