Environmental Toxicants

Question 1

Which environmental toxicant describes how when humans come into contact with directly or indirectly, it can have similar health effects?
A) Tobacco smoke
B) Air pollutants
C) Pesticides

Answer 1

A) Tobacco smoke

Question 2

Which environmental toxicant can be attributed to both natural and anthropogenic sources?
A) Tobacco smoke
B) Air pollutants
C) Pesticides

Answer 2

B) Air pollutants

Question 3

Which environmental toxicants are used intentionally to kill microorganisms, but can still affect humans?
A) Tobacco smoke
B) Air pollutants
C) Pesticides

Answer 3

C) Pesticides

Question 4

Of the two kinds of mercury toxicities, which is the most dangerous to humans with the highest absorption rate?
A) Mercuric Mercury
B) Methyl Mercury

Answer 4

B) Methyl Mercury

Question 5

What is an example of an anthropogenic air pollutant?
A) Automobile exhaust
B) Bisphenol A
C) Ash from volcanic eruptions
D) Chelating agents

Answer 5

A) Automobile exhaust

Question 6

Which statement regarding pesticides is correct?
A) Pesticides are used to intentionally kill bacteria
B) Organophosphorus and organochlorine insecticides cause toxicity by the same mechanism
C) Pesticides are not toxic to humans
D) The manufacture of Agent Orange is associated with TCDD contamination

Answer 6

D) The manufacture of Agent Orange is associate with TCDD contamination

Question 7

Which organism poses the greatest risk of harm from pharmaceuticals in the environment?
A) Humans
B) Fish
C) Birds
D) Large land animals

Answer 7

B) Fish

Question 8

Which one of the statements regarding pharmaceuticals in the environment is correct?
A) The minimum effective therapeutic dose is used for human risk assessment
B) Sewage treatment plants are able to successfully remove all pharmaceuticals from wastewater
C) Antibiotics in the environment are not able to contribute to the development of human antibiotic resistance
D) Throwing unused medications in the garbage is always the best way to dispose of your medication

Answer 8

A) The minimum effective therapeutic dose is used for human risk assessment

Question 9

How much more likely is a smoker to develop lung cancer than a non-smoker?
A) 8x
B) 12x
C) 5x
D) 3x

Answer 9

A) 8x

Question 10

Which environmental exposure will increase cancer risk?
A) Increased alcohol intake
B) Decreased sun exposure
C) A diet high in fruits and vegetables
D) Vaccination for HPV

Answer 10

A) Increased alcohol intake

Question 11

Which modifiable factor(s) causes the most cancer deaths?
A) Tobacco and nutrition
B) Infections and alcohol drinking
C) Food additives and medicinal drugs
D) Sedentary lifestyle

Answer 11

A) Tobacco and nutrition