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Chapter 1 Sec. 1
Exploring and Classifying Life
15
Biology
7th Grade
08/23/2006

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Term
Scientific Methods
Definition
Procedures used to solve problems and anser questions that can include stating the problem, gathering information, forming a hypothesis, testing the hypothesis with an experiment, andalyzing data, and drawing conclusions.
Term
hypothesis
Definition
Prediction that can be tested
Term
control
Definition
Standard to which the outcome of a test is compared
Term
variable
Definition
Something in an experiment that can change.
Term
Theory
Definition
Explanation of things or events based on scientific knowledge resulting from many observations and experiments.
Term
Law
Definition
Statement about how things work in nature that seems to be true consistently.
Term
Organism
Definition
Any living thing
Term
Cell
Definition
Smallest unit of an organism that can carry onlife functions.
Term
Homeostasis
Definition
Regulation of an organisms, life-maintaining conditions.
Term
Spontaneous generation
Definition
Idea that living things come from nonliving things.
Term
Biogenesis
Definition
Theory that living things come only from other living things.
Term
Phylogeny
Definition
Evolutionary history of an organism, used today to group organisms into six kingdoms.
Term
Binomial nomenclature
Definition
Two-word naming system that gives all organisms their scientific name.
Term
Kingdom
Definition
First and largest category used to classify organisms.
Term
Genus
Definition
First word of the two-word scientific name used to identify a group of similar species.
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