AnswersFL-2000310-Biology 1 Sem 2 - FlexHuman Health

Human Health — Unit test Answers

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21
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Environmental conditions can affect food quality.

A
T
B
F
22
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Which of the following is a risk associated with the application of biotechnology?

A
decreased pesticide use
B
decreased erosion
C
increased agricultural yield
D
potential for the exchange of genetic material
23

Freshwater can be renewed, but environmentalists consider it nonrenewable. Why is there a contradiction in classification?

A
Freshwater is recycled through the use of irrigation, bathing, and everyday use.
B
Freshwater is easily polluted or depleted before it can be replaced.
C
Freshwater evaporates and condenses, and then precipitation returns it to the lakes.
D
Freshwater is highly affected by global warming, and is quickly evaporating.
24

Amalia has the flu, a communicable disease that causes a cough and a runny nose. Which best describes how she likely got it?

A
She does not exercise.
B
She has a poor diet.
C
She touched the doorknob in a classroom.
D
She inherited it from her parents.
25

How have scientific advancements helped reduce the impact of hazardous events on society?

A
Scientific advancements have led to the ability to detect some hazardous events before they occur, allowing society to plan for them, mitigating their damage.
B
Scientific advancements have led to the ability to prevent hazardous events.
C
Scientific advancements have led to the ability to detect all hazardous events, preventing damage to society.
D
Scientific advancements have not reduced the impact of hazardous events on society.
26

R-selected species have a short life span and an early reproduction cycle.

A
T
B
F
27

Which of the following statements is true?

A
Biotic factors are nonliving components of an ecosystem.
B
Abiotic factors are living components of an ecosystem.
C
The available space in an ecosystem is an abiotic limiting factor.
D
The available water supply in an ecosystem is a biotic limiting factor.
28

As the human population grows, what happens to our natural-resource requirements?

A
They increase.
B
They decrease.
C
They do not change.
D
They go in cycles.
29

Which of the following health problems is not likely to be magnified by exposure to air pollution?

A
heart attacks
B
diabetes
C
asthma
D
strokes
30

How can an individual most likely achieve optimal personal health?

A
by controlling heredity factors
B
by assessing lifestyle and environmental risks in conjunction with heredity
C
through personalized medicine
D
through vitamin and mineral supplementation
31

A high birth to death ratio leads to smaller populations.

A
T
B
F
32

When population growth increases in an area, what is happening to the birth rate and age structure of that population?

A
increasing birth rate with a greater number of young organisms
B
increasing birth rate with a smaller number of old organisms
C
increasing birth rate with a smaller number of young organisms
D
increasing birth rate with a greater number of old organisms
33

How can the use of biotechnology lead to an increase in soil conservation practices?

A
Biotechnology use can lead to a decrease in pesticide and herbicide use, maintaining soil quality.
B
Biotechnology use can lead to soil compaction, preventing erosion.
C
Biotechnology use can increase the amount of management required for agriculture, increasing the likelihood of the practice of soil conservation.
D
All of the above
34

Advances in medical technology have had no impact on the environment.

A
T
B
F
35

Which of the following groups of individuals is at the highest risk for environmentally induced health risks?

A
infants
B
teenagers
C
college students
D
adults
36

Which of the following is not a factor in determining population size?

A
the food supply
B
birth rate
C
available niches
D
detritivore activity
37

The USDA has approved over 10,000 genetically engineered crops.

A
T
B
F
38

How does population density differ from population size?

A
Population size takes all organisms into account, while population density only takes specific age groups of the population into account.
B
Population size is the total number of organisms, while population density is the total number of organisms within a given area.
C
Population size is the total number of organisms within a given area, while population density is the total number of organisms of a specific age.
D
Population size is the total number of organisms of all species, while population density is the total number of organisms of a specific species.
39

Which of the following is a health risk associated with ozone depletion?

A
diabetes
B
depression
C
skin cancer
D
obesity
40

Which of the following factors will not affect a balanced physiology?

A
elevation
B
precipitation type
C
humidity
D
sun exposure

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