8 min read
This study guide covers LD50 and LC50, including their definitions, calculation, and application in risk assessment. It explains how to interpret these values, compare toxicity across substances, and understand the limitations of the data. The guide also discusses other toxicity measures like NOAEL, ED50, and the history and methods of LD50/LC50 testing, including ethical concerns. Finally, it provides practice questions and exam tips for the AP Environmental Science exam.
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Question 1 of 12
What does LD50 primarily measure? 🤔
The long-term effects of a substance
The dose that kills 50% of a test population
The concentration that causes a specific effect in 50% of the population
The highest dose with no adverse effects