Question 2 Multiple Choice (1 points)
Question: Suppose we test 10 rats under option A.a)"Produces death within
fourteen days in half or more than half of a group of ten or more laboratory
white rats each weighing between two hundred and three hundred grams, at a single
dose of fifty milligrams or less per kilogram of body weight, when orally administered"
At exactly 50 milligrams per kilogram of body weight, exactly 5 rats die. We
would then say, the _________ is 50 mg/kg.
Highest dose
CE10
CE50
LD50
Question 3 Multiple Choice (1 points)
Question: Continuing, suppose at a dose of 50 mg/kg none of the rats die, but
9 of them become ill. The 9 will not eat and continuously whimper. You would
say 50 mg/kg is the ________ of the chemical.
EC50
EC90
LD50
90th quartile
Question 4 True False (1 points)
Question: In the last case with the 9 whimpering rats, would the Consumer Product
Safety Act require you to label this chemical "highly toxic?" True/False:
Question 5 Multiple Choice (1 points)
Question: What are the three routes of exposure?
Oral, Dermal, Lingual
Rat, Mouse, Rabbit
Oral, Dermal, Inhalation
Rat, Rat, and Mouse
Question 6 Multiple Choice (1 points)
Question: The next several questions refer to the document on scented candles.
The author said, "The first step in assessing risk is identifying the chemical
hazards associated with candle emissions." That's part of the first step,
which we call:
Hazard Identification
Exposure-Response Assessment
Exposure Assessment
Risk Characterization
Question 7 Multiple Choice (1 points)
Question: the author identified three main chemical hazards:
wicks, fire, water
soot, benzene, lead
soot, lead, wire
soot and lead only
Question 8 Multiple Choice (1 points)
Question: The author worked at the dose-response for candle soot, but did not
find any information. He then proposed to use information available from what
to estimate the dose-response.
benzene
diesel exhaust
methyl ethyl ketone
none of the above
Question 9 Multiple Choice (1 points)
Question: The author notes: "Due to the lower air exchange rates in newer
homes, the residence time of emissions were determined to continue for up to
10 hours after extinguishing a candle." Here he is working up a/an:
Exposure Assessment
LD50
EC50
Response Factor
Question 10 Multiple Choice (1 points)
Question: The author says, "The absence of consumer warnings concerning
candle emissions and their potential health effects may contribute to exposure
of susceptible individuals to respiratory inflammatory agents, carcinogens and
teratogens. " Implying consumer warning labels should be put on candles.
This issue belongs in:
Exposure Assessment
Dose-Response Evaluation
Risk Characterization
Risk Management.