A bird maintains a relatively stable internal body temperature on a cold day. This is an example of
Answer
Adaption
Evolution
Metabolism
Homeostasis
Development
Question 2
Question
Populations of organisms change over the course of many generations. Many of these changes result in increased survival and reproduction. This phenomenon is
Answer
Evolution
Homeostasis
Development
Genetics
Metabolism
Question 3
Question
A biologist is studying the living organisms in a valley in western Colorado. She is studying
Answer
an Ecosystem
a Community
the Biosphere
a Viable Land Mass
a Population
Question 4
Question
Which of the following is an example of horizontal gene transfer?
Answer
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
Question 5
Question
The scientific name for humans is Homo sapiens. The name Homo is the _________ to which humans are classified.
Answer
Kingdom
Phylum
Order
Genus
Species
Question 6
Question
The complete genetic makeup of an organism is called its
Answer
Genus
Genome
Proteome
Genotype
Phenotype
Question 7
Question
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
Answer
a theory
a law
a prediction
a hypothesis
an assay
Question 8
Question
In science, a theory should
Answer
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
Question 9
Question
Conducting research without a preconceived hypothesis is called
Answer
discovery-based science
the scientific method
hypothesis testing
a control experiment
none of the above
Question 10
Question
What is the purpose of using a control group in scientific experiments?
Answer
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.