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01: Introduction: Biology Today
This activity contains 22 questions.
answer questions about ancestry
evaluate environmental issues
understand and apply new aspects of psychology
understand our immune system
Which property of life is responsible for changes seen in organisms over time?
response to the environment
The life-supporting region of Earth is the _____.
Which of these is an ecosystem?
the mineral content, depth, and temperature of the water of Lake Erie
all of the fish in Lake Erie
the producers found in Lake Erie
Most plants are _____.
composed of prokaryotic cells
What is the fundamental unit of life?
Which of these is a type of prokaryotic cell?
a bacterial cell
a plant cell
a human cell
a mushroom cell
a worm cell
Why can bacteria express human genes?
Both humans and bacteria are composed of eukaryotic cells.
Both humans and bacteria are composed of prokaryotic cells.
Human genes and bacterial genes are the same size.
Humans are composed of cells that resemble bacterial cells.
They share a common genetic language.
Based on diversity, life is divided into Bacteria, Archaea, and Eukarya. These groupings are called _____.
Darwin called a mechanism for descent with modification ______.
The Origin of Species
What mechanism explains why polar bears are white and bears found farther south have a darker color?
the common genetic language
the fact that polar bears are composed of prokaryotic cells whereas bears found farther south are composed of eukaryotic cells
inheritance of acquired characteristics
What is the basis of natural selection?
the selective breeding of domesticated plants and animals
a change in the appearance of a species over time
individuals passing on their traits to their offspring
unequal reproductive success
the accumulation of favorable traits in a population
Which of these scenarios is the result of natural selection?
a plant producing seedless fruit
the spontaneous appearance of species that, through time, do not change in appearance
the appearance of pesticide-resistant insects
the appearance of different breeds of dogs
the appearance of different varieties of goldfish
Verifiable observations and measurements are the tools of _________.
scientists who include controls in an experiment
Which of these is a key feature of the scientific method?
Science only utilizes deductive reasoning.
Science is moral.
Science is based on faith.
Experiments need not be repeatable.
Scientific hypotheses must be testable.
What name is given to a proposed explanation for a set of observations?
Trans fat can best be described as a __________.
food additive that increases heart health
medication for coronary heart disease
non-natural form of fat produced through manufacturing processes
naturally occurring fat material that is added to food to increase shelf life
Which of the following best describes a theory?
a well-known fact
speculations that attempt to explain natural phenomena
an experiment that is repeated over and over again
a comprehensive explanation of natural phenomena supported by abundant evidence
a tentative explanation of natural phenomena
Theories advance science because _____.
they allow scientists to develop hypotheses
they tie together a large number of observations that previously seemed unrelated
they explain religious views
they are limited to biological phenomena
they have limited explanatory power
Which of the following best describes the culture of science and how scientists work?
Scientists commonly repeat other scientists' experiments to verify their work.
Scientists attempt to prove their hypotheses.
Scientists develop hypotheses based solely on their own observations.
Scientists work alone to prevent input by other scientists.
Scientists commonly make subjective conclusions in their work.
Although technology has improved our standard of living, it __________.
has discouraged research on a variety of issues
has no use in other aspects of our society
has reduced the human reproductive rate
caused the formation of dozens of new species
has had negative environmental consequences
The adaptation of bacteria to an environment containing an antibiotic means that _________.
the killing efficiency of the antibiotic was enhanced
heritable variations already existed among individuals within the population
physicians should prescribe more antibiotics
the time it takes the bacteria to divide is reduced
the antibiotic created the resistance
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