QUESTIONS WITH CORRECT COMPLETE SOLUTIONS
(VERIFIED ANSWERS)/ 2025/2026 NEWEST UPDATE .
What dictates fate and transport of a chemical? - ANSWER-
concentration
what is synergistic toxicity - ANSWER-some compounds
produce a greater effect in the presence of other compounds
what is antagonistic toxicity - ANSWER-when compounds
cancel out each others affects
Define the 4 components of risk assessment - ANSWER-1.
Hazard assessment (is there strong evidence that we need a
risk assessment)
2. Dose-Response assessment (what dose produces
responses)
3. Exposure assessment (concentration, pathways, frequency,
etc.)
4. Risk characterization (combination of all the above info.)
, What do we use a hazard assessment for? - ANSWER-to
determine whether a chemical is casually linked to particular
heath affects
What is dose - ANSWER-the amount of a substance
administered at one time
considered a dose AFTER IT CROSSES AN OUTER BOUNDARY
true or false dose response always reflects the amount
administered to a target - ANSWER-false. it commonly but not
always does.
Dose equation - ANSWER-Dose = (Concentration)(Intake rate) /
(body weight)
units = mg/kg*day
The dose response curve is based on ___________ - ANSWER-
the mode of the response
how is the Non carcinogenic dose response curve shaped? –
ANSWER-gaussian shaped, NOAEL (no observed adverse