ENV MED - QUIZ 6 (WK 7) - MERCURY - KINETICS & TESTING
EXAMS WITH 100% CORRECT DETAILED ANSWERS UPDATED
2025/2026 BEST GRADED A+ FOR PASS
Mercury has three clinically relevant electron states. They are
Hg0 Inorganic, Hg+ Organic, Hg++ Metallic
Hg0 Metallic, Hg+ Inorganic, Hg++ Organic
Hg0 Organic, Hg+ Inorganic, Hg++ Metallic
Hg0 Metallic, Hg+ Inorganic, Hg++ Organic
Hg0 Metallic, Hg+ Organic, Hg++ Inorganic CORRECT ANSWERS
Hg0 Metallic, Hg+ Organic, Hg++ Inorganic
The most important sources of exogenous mercury exposure for folks in the USA these days are
fish and other seafood
broken mercury fluorescent light bulbs or thermometers
working in or living close to a business that uses mercury reagents (including gold mining)
cows milk
all of these are important sources of exogenous mercury exposure for folks in the USA these
days; except for cows milk
dental amalgams CORRECT ANSWERS
all of these are important sources of exogenous mercury exposure for folks in the USA these
days; except for cows milk
Mercury in its various forms act as a poison, contributing to
neurodevelopmental disruption, abnormal DNA transcription and protein synthesis, disrupted
heme synthesis, abnormal cell membrane function, neurotransmitter disruption, free radical
generation, stimulation of neuro-excitotoxins (pertinent to neurodegenerative disorders)
chronic kidney disease, hepatic insufficiency, glutathione depletion, peripheral neurologic
dysfunction including sensory, motor and autonomic neuropathies, sleep disorder, asthma,
mitochondrial dysfunction and injury, disordered protein synthesis and enzyme function
all of these are example of mercury's possible toxicities
infertility, autoimmune thyroid disease, hypo-immunity and disordered immune signaling,
weakness, fatigue, depression/anxiety, excessive shyness
diminished cellular function by altering the tertiary and quaternary structure of proteins and by
binding with sulfhydryl and CORRECT ANSWERS
, ENV MED - QUIZ 6 (WK 7) - MERCURY - KINETICS & TESTING
EXAMS WITH 100% CORRECT DETAILED ANSWERS UPDATED
2025/2026 BEST GRADED A+ FOR PASS
all of these are example of mercury's possible toxicities
The following is(are) true of metallic mercury and its toxicokinetics:
Hg0 is found in air, water, algae and seaweeds, fish, poultry fed on fishmeal, pesticides,
fungicides, insecticides, and thimerosal-containing vaccines
Hg0 that enters the body as a vapor and stays as a vapor dissolved in the blood is soon
eliminated as Hg0 vapor by lungs 10-37%, or it is rapidly oxidized to Hg2 in the blood or kidney,
to be excreted by the kidney; or it is distributed very rapidly as Hg0 vapor (dissolved in the
blood) to tissues particularly the brain, thyroid, breast, myocardium, muscles, adrenals, liver,
kidneys, sweat glands, pancreas, enterocytes, lungs, salivary glands, testes, prostate, T-cells,
placenta, fetus, breast milk; some small portion is excreted by the liver as Hg0 or Hg2.
Intracellular Hg0 is either quickly redistributed back into circulation, or is oxidized to Hg2 inside
the cell, where it stays as Hg2 for a ve CORRECT ANSWERS
All of these statements are true according to Hibbs' outline of metallic mercury toxicokinetics
except the one about fish, algae, etc.
The following statement(s) is true of Organic Mercury:
All of these statements are true of organic mercury, except the one about antiseptics, coal and
smoke, which refers to Inorganic mercuric mercury.
Ingested Hg1 is absorbed about 95% from the GI tract, easily crosses all barriers and
membranes via active transporters, is rapidly(1-4 days) distributed to initial tissue sites
including 10% to brain and 5% to RBCs, also preferring liver, kidneys, placenta, fetus, peripheral
nerves, bone marrow, and heavily to fetal brain
Hg1 is found in air, water, algae and seaweeds, fish, poultry fed on fishmeal, pesticides,
fungicides, insecticides, and thimerosal-containing vaccines.
some intracellular Hg1 is converted within hours or days to Hg2+ (half-life 20yrs) ; Hg1 that is
not oxidized to Hg2 is excreted by the liver, and in hair, skin, nails, and sweat. Most Hg1 is
excreted via liver, but in absence of adequate fiber is l CORRECT ANSWERS
All of these statements are true of organic mercury, except the one about antiseptics, coal and
smoke, which refers to Inorganic mercuric mercury.
Inorganic mercury (Hg++) is absorbed in GI 2-15%, skin absorption can be significant - topical
Hg++ raised HgU 50X after skin-lightening cream use(WHO). Evidence varies regarding its
EXAMS WITH 100% CORRECT DETAILED ANSWERS UPDATED
2025/2026 BEST GRADED A+ FOR PASS
Mercury has three clinically relevant electron states. They are
Hg0 Inorganic, Hg+ Organic, Hg++ Metallic
Hg0 Metallic, Hg+ Inorganic, Hg++ Organic
Hg0 Organic, Hg+ Inorganic, Hg++ Metallic
Hg0 Metallic, Hg+ Inorganic, Hg++ Organic
Hg0 Metallic, Hg+ Organic, Hg++ Inorganic CORRECT ANSWERS
Hg0 Metallic, Hg+ Organic, Hg++ Inorganic
The most important sources of exogenous mercury exposure for folks in the USA these days are
fish and other seafood
broken mercury fluorescent light bulbs or thermometers
working in or living close to a business that uses mercury reagents (including gold mining)
cows milk
all of these are important sources of exogenous mercury exposure for folks in the USA these
days; except for cows milk
dental amalgams CORRECT ANSWERS
all of these are important sources of exogenous mercury exposure for folks in the USA these
days; except for cows milk
Mercury in its various forms act as a poison, contributing to
neurodevelopmental disruption, abnormal DNA transcription and protein synthesis, disrupted
heme synthesis, abnormal cell membrane function, neurotransmitter disruption, free radical
generation, stimulation of neuro-excitotoxins (pertinent to neurodegenerative disorders)
chronic kidney disease, hepatic insufficiency, glutathione depletion, peripheral neurologic
dysfunction including sensory, motor and autonomic neuropathies, sleep disorder, asthma,
mitochondrial dysfunction and injury, disordered protein synthesis and enzyme function
all of these are example of mercury's possible toxicities
infertility, autoimmune thyroid disease, hypo-immunity and disordered immune signaling,
weakness, fatigue, depression/anxiety, excessive shyness
diminished cellular function by altering the tertiary and quaternary structure of proteins and by
binding with sulfhydryl and CORRECT ANSWERS
, ENV MED - QUIZ 6 (WK 7) - MERCURY - KINETICS & TESTING
EXAMS WITH 100% CORRECT DETAILED ANSWERS UPDATED
2025/2026 BEST GRADED A+ FOR PASS
all of these are example of mercury's possible toxicities
The following is(are) true of metallic mercury and its toxicokinetics:
Hg0 is found in air, water, algae and seaweeds, fish, poultry fed on fishmeal, pesticides,
fungicides, insecticides, and thimerosal-containing vaccines
Hg0 that enters the body as a vapor and stays as a vapor dissolved in the blood is soon
eliminated as Hg0 vapor by lungs 10-37%, or it is rapidly oxidized to Hg2 in the blood or kidney,
to be excreted by the kidney; or it is distributed very rapidly as Hg0 vapor (dissolved in the
blood) to tissues particularly the brain, thyroid, breast, myocardium, muscles, adrenals, liver,
kidneys, sweat glands, pancreas, enterocytes, lungs, salivary glands, testes, prostate, T-cells,
placenta, fetus, breast milk; some small portion is excreted by the liver as Hg0 or Hg2.
Intracellular Hg0 is either quickly redistributed back into circulation, or is oxidized to Hg2 inside
the cell, where it stays as Hg2 for a ve CORRECT ANSWERS
All of these statements are true according to Hibbs' outline of metallic mercury toxicokinetics
except the one about fish, algae, etc.
The following statement(s) is true of Organic Mercury:
All of these statements are true of organic mercury, except the one about antiseptics, coal and
smoke, which refers to Inorganic mercuric mercury.
Ingested Hg1 is absorbed about 95% from the GI tract, easily crosses all barriers and
membranes via active transporters, is rapidly(1-4 days) distributed to initial tissue sites
including 10% to brain and 5% to RBCs, also preferring liver, kidneys, placenta, fetus, peripheral
nerves, bone marrow, and heavily to fetal brain
Hg1 is found in air, water, algae and seaweeds, fish, poultry fed on fishmeal, pesticides,
fungicides, insecticides, and thimerosal-containing vaccines.
some intracellular Hg1 is converted within hours or days to Hg2+ (half-life 20yrs) ; Hg1 that is
not oxidized to Hg2 is excreted by the liver, and in hair, skin, nails, and sweat. Most Hg1 is
excreted via liver, but in absence of adequate fiber is l CORRECT ANSWERS
All of these statements are true of organic mercury, except the one about antiseptics, coal and
smoke, which refers to Inorganic mercuric mercury.
Inorganic mercury (Hg++) is absorbed in GI 2-15%, skin absorption can be significant - topical
Hg++ raised HgU 50X after skin-lightening cream use(WHO). Evidence varies regarding its
