Knowledge Check Solutions
1) Identifying the exposure pathways - This is the correct answer.
Exposure pathways are key to exposure assessment because they identify the route a substance takes from its source to its end point, as well as how people can be exposed to the substance.
2) Using exposure models to derive scientific estimates - This is the correct answer.
Since actual measurements of exposures are often unavailable, exposure models may be used.
3) It determines the amount of exposure that must be reduced to comply with the acceptable risk level - This is the correct answer.
Risk characterization involves predicting the frequency and severity of effects in exposed populations. It integrates conclusions reached in hazard identification and exposure to yield probabilities of effects likely to occur in humans exposed under similar conditions.
4) It is likely that two people out of one million will develop the specific type of cancer in their lifetime due to exposure to the chemical - This is the correct answer.
An increased cancer risk of 2 times 10^-6 means two in a million people will likely develop the specific type of cancer in their lifetime due to exposure to the chemical.
1) Identifying the exposure pathways - This is the correct answer.
Exposure pathways are key to exposure assessment because they identify the route a substance takes from its source to its end point, as well as how people can be exposed to the substance.
2) Using exposure models to derive scientific estimates - This is the correct answer.
Since actual measurements of exposures are often unavailable, exposure models may be used.
3) It determines the amount of exposure that must be reduced to comply with the acceptable risk level - This is the correct answer.
Risk characterization involves predicting the frequency and severity of effects in exposed populations. It integrates conclusions reached in hazard identification and exposure to yield probabilities of effects likely to occur in humans exposed under similar conditions.
4) It is likely that two people out of one million will develop the specific type of cancer in their lifetime due to exposure to the chemical - This is the correct answer.
An increased cancer risk of 2 times 10^-6 means two in a million people will likely develop the specific type of cancer in their lifetime due to exposure to the chemical.