A bird maintains a relatively stable internal body temperature on a cold day. This is an example of
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Adaption
Evolution
Metabolism
Homeostasis
Development
Questão 2
Questão
Populations of organisms change over the course of many generations. Many of these changes result in increased survival and reproduction. This phenomenon is
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Evolution
Homeostasis
Development
Genetics
Metabolism
Questão 3
Questão
A biologist is studying the living organisms in a valley in western Colorado. She is studying
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an Ecosystem
a Community
the Biosphere
a Viable Land Mass
a Population
Questão 4
Questão
Which of the following is an example of horizontal gene transfer?
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the transmission of an eye color gene from father to daughter
the transmission of a mutant gene causing cystic fibrosis from father to daughter
the transmission of a gene conferring pathogenicity (the ability to cause disease) from one bacterial species to another
the transmission of a gene conferring antibiotic resistance from a mother cell to its two daughter cells
all of the above
Questão 5
Questão
The scientific name for humans is Homo sapiens. The name Homo is the _________ to which humans are classified.
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Kingdom
Phylum
Order
Genus
Species
Questão 6
Questão
The complete genetic makeup of an organism is called its
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Genus
Genome
Proteome
Genotype
Phenotype
Questão 7
Questão
After observing certain desert plants in their native environment, a researcher proposes that they drop their leaves to conserve water. This is an example of
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a theory
a law
a prediction
a hypothesis
an assay
Questão 8
Questão
In science, a theory should
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be equated with knowledge
be supported by a substantial body of evidence
provide the ability to make many correct predictions
do all of the above
b and c only
Questão 9
Questão
Conducting research without a preconceived hypothesis is called
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discovery-based science
the scientific method
hypothesis testing
a control experiment
none of the above
Questão 10
Questão
What is the purpose of using a control group in scientific experiments?
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A control group allows the researcher to practice the experiment first before actually conducting it.
A researcher can compare the results in the experimental group and control group to determine if a single variable is causing a particular outcome in the experimental group.
A control group provides the framework for the entire experiment so the researcher can recall the procedures that should be conducted.
A control group allows the researcher to conduct other experimental changes without disturbing the original experiment.
All of the above are correct.
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