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MASSACHUSETTS PESTICIDE APPLICATOR
CORE EXAM LATEST 2024-2025 ACTUAL
EXAM ALL 400 QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES
RATED 100%
Chronic health effect
✓ Problems that develop over a relatively long period of time, following
either one significant exposure that initiates a problem, or following a
series of small exposures which accumulate in some manner and result
in a development of a disease or disorder
acute toxicity
✓ Poisoning from a single dose over a much shorter duration of time
How soon do health effects occur from accrue toxicity?
✓ Within 24 hours of exposure
Chronic health risk problems (major examples)
✓ Mutagenicity, oncogenicity, carcinogenicity, teratogenicity,
neurotoxicity
Master01 | November, 2024/2025 | Latest update
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Mutagenicity
✓ Ability of a substance or agent to cause mutations to genes or
chromosomes
Changes from mutagenicity are...
✓ Almost always harmful
Tests to detect mutagenicity
✓ Varied. Tests on cells to tests on whole animals
It's believed that chemicals that cause mutations are more likely to be ones
that can also cause...
✓ Cancers
Why is mutation testing used as a first screen for new compounds?
✓ Faster and cheaper than animal lifetime testing
Oncogenicity
✓ The ability of a chemical to cause abnormal growths or tumors in tissues
Master01 | November, 2024/2025 | Latest update
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Carcinogenicity
✓ Ability of a substance or agent to cause malignant tumors
How do they test chemicals for their ability to cause tumors
✓ Administering daily doses to animals for their entire lifetime and then
dissecting them to detect presence of tumors in the animals tissues
A rodent carcinogenicity study takes how long typically?
✓ 2-3 years
Pesticide companies are required to submit test data on oncogenicity from....
✓ Several animal species
There are currently how many pesticide active ingredients considered
known, likely, or probable carcinogens
✓ Over 70
MDAR
✓ Massachusetts Department of Agricultural Resources
Master01 | November, 2024/2025 | Latest update
, 1|Page | © copyright 2024/2025 | Grade A+
Act to protect children and families from harmful pesticides
✓ Passed in 2000. Pesticide products that contain carcinogens may not
be used in or around schools, daycares, or after school programs
Teratogenicity
✓ Ability of a substance to cause abnormal growth or deformity in
developing fetuses (birth defects)
How is teratogenicity tested
✓ Administering doses of chemical to female test animals at various
stages of pregnancies and observing number of miscarriages and
defective offspring verses what would normally be expected
Examples of animals used to test teratogenicity
✓ Rodents, rabbits, dogs, monkeys
Effects of chemicals are usually considered significant for teratogenicity if...
✓ They occur at doses not toxic by themselves to the mother
Testing for teratogenicity is standard part of pesticide registration although
___________ May exist for older chemicals
Master01 | November, 2024/2025 | Latest update
MASSACHUSETTS PESTICIDE APPLICATOR
CORE EXAM LATEST 2024-2025 ACTUAL
EXAM ALL 400 QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES
RATED 100%
Chronic health effect
✓ Problems that develop over a relatively long period of time, following
either one significant exposure that initiates a problem, or following a
series of small exposures which accumulate in some manner and result
in a development of a disease or disorder
acute toxicity
✓ Poisoning from a single dose over a much shorter duration of time
How soon do health effects occur from accrue toxicity?
✓ Within 24 hours of exposure
Chronic health risk problems (major examples)
✓ Mutagenicity, oncogenicity, carcinogenicity, teratogenicity,
neurotoxicity
Master01 | November, 2024/2025 | Latest update
, 1|Page | © copyright 2024/2025 | Grade A+
Mutagenicity
✓ Ability of a substance or agent to cause mutations to genes or
chromosomes
Changes from mutagenicity are...
✓ Almost always harmful
Tests to detect mutagenicity
✓ Varied. Tests on cells to tests on whole animals
It's believed that chemicals that cause mutations are more likely to be ones
that can also cause...
✓ Cancers
Why is mutation testing used as a first screen for new compounds?
✓ Faster and cheaper than animal lifetime testing
Oncogenicity
✓ The ability of a chemical to cause abnormal growths or tumors in tissues
Master01 | November, 2024/2025 | Latest update
, 1|Page | © copyright 2024/2025 | Grade A+
Carcinogenicity
✓ Ability of a substance or agent to cause malignant tumors
How do they test chemicals for their ability to cause tumors
✓ Administering daily doses to animals for their entire lifetime and then
dissecting them to detect presence of tumors in the animals tissues
A rodent carcinogenicity study takes how long typically?
✓ 2-3 years
Pesticide companies are required to submit test data on oncogenicity from....
✓ Several animal species
There are currently how many pesticide active ingredients considered
known, likely, or probable carcinogens
✓ Over 70
MDAR
✓ Massachusetts Department of Agricultural Resources
Master01 | November, 2024/2025 | Latest update
, 1|Page | © copyright 2024/2025 | Grade A+
Act to protect children and families from harmful pesticides
✓ Passed in 2000. Pesticide products that contain carcinogens may not
be used in or around schools, daycares, or after school programs
Teratogenicity
✓ Ability of a substance to cause abnormal growth or deformity in
developing fetuses (birth defects)
How is teratogenicity tested
✓ Administering doses of chemical to female test animals at various
stages of pregnancies and observing number of miscarriages and
defective offspring verses what would normally be expected
Examples of animals used to test teratogenicity
✓ Rodents, rabbits, dogs, monkeys
Effects of chemicals are usually considered significant for teratogenicity if...
✓ They occur at doses not toxic by themselves to the mother
Testing for teratogenicity is standard part of pesticide registration although
___________ May exist for older chemicals
Master01 | November, 2024/2025 | Latest update
