A bird maintains a relatively stable internal body temperature on a cold day. This is an example of
Adaption
Evolution
Metabolism
Homeostasis
Development
Populations of organisms change over the course of many generations. Many of these changes result in increased survival and reproduction. This phenomenon is
Genetics
A biologist is studying the living organisms in a valley in western Colorado. She is studying
an Ecosystem
a Community
the Biosphere
a Viable Land Mass
a Population
Which of the following is an example of horizontal gene transfer?
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
The scientific name for humans is Homo sapiens. The name Homo is the _________ to which humans are classified.
Kingdom
Phylum
Order
Genus
Species
The complete genetic makeup of an organism is called its
Genome
Proteome
Genotype
Phenotype
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
a theory
a law
a prediction
a hypothesis
an assay
In science, a theory should
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
Conducting research without a preconceived hypothesis is called
discovery-based science
the scientific method
hypothesis testing
a control experiment
none of the above
What is the purpose of using a control group in scientific experiments?
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.
