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Toxicology Practice Questions and Answers
Which of the following is NOT assessed by a toxicologist to
determine the potential for environmental damage of a new
chemical?
A.The origin of the toxic substance.
B.Toxicity of the compound.
C.Determine antibiotic resistance that may have evolved over long
periods of exposure.
D.determining the probability that an organism will encounter the
toxicant.
Ans: C.determine antibiotic resistance that may have evolved over long
periods of exposure.
A child enters the pediatrician's office with symptoms that
include anemia, hearing loss, kidney, and stomach problems. The
family has just recently moved into a 50-year-old home and is
doing renovations. What might be the problem with this child?
Ans: lead poisoning
How is global climate change associated with infectious disease?
Ans: Global climate change is facilitating the spread of tropical diseases
to temperate regions.
The important environmental book called __________ exposed the
hazards of using the insecticide DDT.
Ans: Silent Spring
Many developing countries continue to use DDT, even though it
has been banned in many other places. Why?
Ans: DDT is used to control disease vectors.
© 2025 All rights reserved
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Exposure to low amounts of a chemical over long periods of time
is _______.
Ans: chronic exposure
What does it mean to say that infants can be born 'pre-polluted?"
Ans: toxins from its mother while in the womb
Synthetic pesticides can become airborne, travel in the
atmosphere and deposit in oceans or at the poles in a process
called _______, which results in pesticide concentrates near the
poles.
Ans: global distillation
Biomagnification _______.
Ans: is the increase in toxicant concentration in an animal's body tissue,
as it moves up to the top trophic levels in the food chain
BPA and phthalates are known _________.
Ans: endocrine disruptors
_______ studies are comparisons that track the fate of large
groups of people for long periods of time in order to help answer
an environmental question.
Ans: Epidemiological
A _______ LD50 indicates low toxicity while a _______ LD50
indicates high toxicity.
Ans: high; low
Which dose-response curve indicates a complex response to
toxicants, such as those associated with endocrine disrupters?
Ans: unconventional dose-response curve
A low LD50 indicates _______.
© 2025 All rights reserved
Toxicology Practice Questions and Answers
Which of the following is NOT assessed by a toxicologist to
determine the potential for environmental damage of a new
chemical?
A.The origin of the toxic substance.
B.Toxicity of the compound.
C.Determine antibiotic resistance that may have evolved over long
periods of exposure.
D.determining the probability that an organism will encounter the
toxicant.
Ans: C.determine antibiotic resistance that may have evolved over long
periods of exposure.
A child enters the pediatrician's office with symptoms that
include anemia, hearing loss, kidney, and stomach problems. The
family has just recently moved into a 50-year-old home and is
doing renovations. What might be the problem with this child?
Ans: lead poisoning
How is global climate change associated with infectious disease?
Ans: Global climate change is facilitating the spread of tropical diseases
to temperate regions.
The important environmental book called __________ exposed the
hazards of using the insecticide DDT.
Ans: Silent Spring
Many developing countries continue to use DDT, even though it
has been banned in many other places. Why?
Ans: DDT is used to control disease vectors.
© 2025 All rights reserved
, 2 | Page
Exposure to low amounts of a chemical over long periods of time
is _______.
Ans: chronic exposure
What does it mean to say that infants can be born 'pre-polluted?"
Ans: toxins from its mother while in the womb
Synthetic pesticides can become airborne, travel in the
atmosphere and deposit in oceans or at the poles in a process
called _______, which results in pesticide concentrates near the
poles.
Ans: global distillation
Biomagnification _______.
Ans: is the increase in toxicant concentration in an animal's body tissue,
as it moves up to the top trophic levels in the food chain
BPA and phthalates are known _________.
Ans: endocrine disruptors
_______ studies are comparisons that track the fate of large
groups of people for long periods of time in order to help answer
an environmental question.
Ans: Epidemiological
A _______ LD50 indicates low toxicity while a _______ LD50
indicates high toxicity.
Ans: high; low
Which dose-response curve indicates a complex response to
toxicants, such as those associated with endocrine disrupters?
Ans: unconventional dose-response curve
A low LD50 indicates _______.
© 2025 All rights reserved
