Section 2! Lesson 7:

Lesson 7 covered mostly lethal doses and how to convert them. The definition of lethal dose or LD50: the amount of an ingested substance that kills 50% of a test sample of animals:(. It is expressed in mg/kg, or milligrams of a substance per kilogram of body weight. Also, toxicity depends on the amount of toxic substance and mass of the organism. Thats why to find out, we need to conduct a conversion. The smaller the lethal dose, or LD50, the more potentially dangerous a substance is<--- important!! Lastly, many toxic substances can be therapeutic at lower doses! Below is a conversion so you can see how to do it!

132Ibs 1kg 7069mg = 424,000mg

2.2Ibs 1kg

Homework:

 

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