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WorksheetsHuman Health
Total questions: 25
Worksheet time: 14mins
Name
Class
Date
1.
Which of the following is a neurotoxin?
a)
Asbestos
b)
Thalidomide
c)
Mercury
d)
DDT
2.
The LD-50 for this substance is
a)
87 mg/kg
b)
20 mg/kg
c)
43 mg/kg
d)
11 mg/kg
3.
Asbestos has been shown to have a higher correlation with cancer when someone smokes cigarettes as well. This is because...
a)
both substances are teratogens
b)
the synergistic effect that results from exposure to both at the same time
c)
Asbestos is a carcinogen and tobacco is an endocrine disruptor
d)
the risk-taking behavior of the individual exposed
4.
LD-50 shows
a)
the dose that kills 50 % of a test population
b)
the dose at which 50 % of a population displays negative health effects
c)
the dose at which the first individual in a population dies from exposure
d)
the dose that causes 50% of the population to become extinct
5.
Which of the following is associated with Hg poisoning?
a)
Brain Damage
b)
Developmental Delays
c)
Minamata Disease
d)
All of the above
6.
BPA has been shown to reduce the amount of testosterone in males of some species. BPA can be classified as a(n)
a)
carcinogen
b)
teratogen
c)
endocrine disruptor
d)
mutagen
7.
Which list is made up of toxic metal pollutants?
a)
PCB, BPA, mercury, & potassium
b)
cadmium, arsenic, lead, & mercury
c)
DDT, cadmium, lead, potassium, & BPA
d)
argon, neon, chromium, & mercury
8.
Ticks and mosquitos can be vectors for diseases. In both cases, these organisms acquire the disease-causing organism by
a)
feeding on a host animal
b)
a random mutation that is more common in small organisms
c)
breeding in areas that are very humid
d)
all of these
9.
Infectious diseases are diseases caused by a __________, such as a virus or a bacterium.
a)
pathogen
b)
toxicant
c)
pandemic
d)
carcinogen
10.
What type of environmental hazard is shown below?
a)
cultural hazard
b)
physical hazard
c)
chemical hazard
d)
biological hazard
11.
Infectious diseases can be spread by
a)
contaminated water
b)
human-human contact
c)
close contact with wild animals
d)
all the above
12.
The process through which pollutants get increasingly more concentrated at each step up the food chain is known as
a)
biomagnification
b)
anaphylaxis
c)
toxicity
d)
bioaccumulation
13.
Some mercury that we are exposed to comes from natural sources, but most comes from anthropogenic sources, in particular from
a)
automobile exhaust
b)
coal-burning power plants
c)
old paint in homes
d)
runoff from livestock waste
14.
Toxicity is given in milligrams/kilogram of body weight of individual ingesting the toxin. Which LD-50 is the most toxic?
a)
5mg/kg
b)
50 mg/kg
c)
500 mg/kg
d)
500mg/kg
15.
Which of the following is a non-transmissible disease?
a)
tuberculosis
b)
measles
c)
HIV
d)
diabetes
16.
A global outbreak of an infectious disease is called a or an
a)
epidemic
b)
endemic
c)
pandemic
d)
outbreak
17.
DDT, PCB's, BPA and phthalates are all examples of ....
a)
insecticides
b)
hormonally active agents
c)
plastic additives
d)
all of these
18.
Lead poisoning affects which of the following systems the most?
a)
respiratory
b)
circulatory
c)
nervous
d)
integumentary
19.
A child shows symptoms of lead toxicity, which is linked to lead based paint on found on the bedroom walls. This type of poisoning would be considered...
a)
Acute
b)
Synergism
c)
Chronic
d)
Antagonism
20.
What is the threshold dose of Toxin B?
a)
13 mg
b)
50 mg
c)
25 mg
d)
35 mg
21.
What is the LD-50 for Toxin B?
a)
10 mg
b)
13 mg
c)
25 mg
d)
50 mg
22.
Which of the following types of people generally has a greater sensitivity to environmental hazards than the other types of people?
a)
teenagers
b)
adults
c)
infants
d)
none; all have equal sensitivity
23.
DDT is ____________ in the environment. This means it doesn't break down/decompose, instead it lasts a long time.
a)
persistent
b)
synergistic
c)
acute
d)
threshold
24.
A toxin, such as DDT, builds up in the fatty tissue of an organism. This is referred to as...
a)
biomagnification
b)
bioaccumulation
c)
synergism
d)
dose-response
25.
What is the name for the measure of how harmful a substance is?
a)
toxicity
b)
response
c)
dose
d)
biomagnification
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