NURSING EXAM QUESTIONS
TOXICOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The concentration of a toxin that will result in the loss of 50% of a population
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LD50
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IPM
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CAFO
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NH4
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TP50
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Explanation:
Detailed explanation-1: -LC50 is short for “lethal concentration 50%” or “median lethal concentration". It is the concentration of a substance (in air or water) at which half the members of a population are killed after a specified duration of exposure. Exposure is typically through inhalation.
Detailed explanation-2: -LD stands for “Lethal Dose". LD50 is the amount of a material, given all at once, which causes the death of 50% (one half) of a group of test animals.
Detailed explanation-3: -LD50 can be calculated using the formula LD50 = ED50/3 x Wm x 10-4. It is expressed in mg/kg bw/d or milligram of a substance per kilo of body weight administered per day.
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