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Multiple tissues working together for a common goal is known as…
a.
an organism.
b.
an ecosystem.
c.
an organelle.
d.
an organ system.
e.
an organ.
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e
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True or False? Viruses are considered alive by some biologists even though they are not made of cells or meet all of the characteristics of life.
True
False
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True
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Which of the following statements about scientific theories is most accurate?
a.
All scientists accept scientific theories to be true.
b.
A scientific theory is just a guess.
c.
A scientific theory is a proven fact.
d.
A scientific theory is supported by many independent observations and experiments.
|
d
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If a scientific theory is going to be accepted by the scientific community it must…
a.
be all encompassing
b.
also be a hypothesis
c.
be falsifiable
d.
explain both natural and supernatural events
|
c
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Which scientist used the Scientific Method to test his hypothesis that mold might secrete a substance that kills bacteria?
a.
Louis Pasteur
b.
Albert Einstein
c.
Alexander Fleming
d.
Linus Pauling
e.
James Watson
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c
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You have read about a diet product that has been "proven effective" by a studying on a group of 20 college students, but no one has been able to repeat the study and get similar results. How should you view the results of the study?
a.
As fact, after all, it was "experimentally proven".
b.
As a valid research study.
c.
As valid only for those with a college education.
d.
With skepticism.
|
d
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Why have Biologists yet to come up with a simple succinct definition of "life"?
a.
Because to be able to define life one would first have to fully understand every aspect of life, which no biologist has yet been able to do.
b.
Because they are afraid that as soon as "life" is defined in simple terms, it will in some way devalue life.
c.
Because some non-living things are also alive.
d.
Because not all biologists agree that life exists.
e.
Because there is no one characteristic that all life shares that isn’t also shared by some non-living things.
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e
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Staring out the window one day, you notice a line of ants crawling across the sidewalk. The line leads to a wet spot on the sidewalk and then back to the anthill in the ground. You start to wonder what the ants find so attractive about that wet spot. If you were following the scientific method of investigation, your next step would be to…
a.
draw conclusions about what is attracting the ant.
b.
propose a theory that explains the ants’ behavior.
c.
devise an experiment and start collecting data.
d.
form a testable hypotheses to explain what attracts the ants.
|
d
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For a hypothesis to be valid, it must…
a.
accurately explain every aspect of the observed natural phenomenon.
b.
be based on scientific experiments and not on observations.
c.
be testable.
d.
be proven true by scientific experiments.
|
c
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Which of the following is true?
a.
A scientific theory explains what we know to date about a natural phenomenon.
b.
A scientific theory is the final answer to a question about a natural phenomenon.
c.
A scientific theory is a hunch about a natural phenomenon.
d.
A scientific hypothesis and a scientific theory are the same thing.
|
a
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Choose the answer that best describes the sequence of the scientific method.
a.
guess, hypothesis, experiment, conclusion
b.
observation, hypothesis, experiment, conclusion
c.
observation, hypothesis, experiment, absolute fact
d.
hypothesis, experiment, observation, conclusion
e.
experiment, observation, hypothesis, conclusion
|
b
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A tentative and unproven educated guess as an answer to a scientific question is called …
a.
an experiment.
b.
a principle.
c.
a control.
d.
a variable.
e.
a hypothesis.
|
e
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Which of the following is NOT one of the characteristics of life?
a.
The ability to reproduce using DNA
b.
The ability to think and feel
c.
The ability to sense and respond to the environment
d.
The ability to evolve and adapt
e.
The ability to maintain a stable internal environment.
|
b
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What is the only defining difference between an ecosystem and a community?
a.
Communities only include a single species while ecosystems include all species in an area.
b.
Ecosystems also include non-living things.
c.
Ecosystems only include non-living things whereas communities only include living things.
d.
Communities do not include species of organisms.
e.
Communities are always defined in reference to a specific area whereas ecosystems always include all the organisms of the planet.
|
b
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The ability to carry out photosynthesis (using the energy in sunlight to make sugar)…
a.
would not be a good item to add to the list of characteristics of life because not all living organisms can conduct photosynthesis.
b.
would not be a good item to add to the list of characteristics of life because someday in the future, a non-living thing may be able to conduct photsynthesis.
c.
Is currently one of the characteristics of life.
d.
would be a good item to add to the list of characteristics of life because all life either directly or indirectly gets its energy from the sun.
e.
would be a good item to add to the list of characteristics of life since there aren’t any non-living things that can do photosynthesis.
|
e
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