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Chapter 1 Vocabulary
Chapter 1 Vocabulary
14
Biology
9th Grade
01/25/2013

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Term
Skepticism
Definition
one of two or more possible forms of a character; a recognizable feature or characteristic of an organism
Term
Observations
Definition
the process of obtaining information by using the senses; the information obtained by using the senses
Term
Hypothesis
Definition
a testable idea or explanation that leads to scientific investigation
Term
Experiment
Definition
a procedure that is carried out under controlled conditions to discover, demonstrate, or test a fact, theory, or general truth
Term
Control Group
Definition
in an experiment, a group that serves as a standard of comparison with another group to which the control group is identical except for one factor
Term
Theroy
Definition
a system of ideas that explains many related observations and is supported by a large body of evidence acquired through scientific investigation
Term
SI
Definition
International System of Units, which is the measurement system that is accepted worldwide
Term
Biology
Definition
the scientific study of living organisms and their interactions with the environment
Term
Cell
Definition
highly organized, tiny structure that is enclosed in a thin covering called a membrane
Term
Homeostasis
Definition
the maintenance of a constant internal state in a changing environment; a constant internal state that is maintained in a changing environment by continually making adjustments to the internal and external environment
Term
Metabolism
Definition
the sum of all chemical processes that occur in an organism
Term
Reproduction
Definition
the process of producing offspring
Term
Heredity
Definition
the passing of genetic traits from parent to offspring
Term
Evolution
Definition
the process of change by which new species develop from preexisting species over time; at the genetic level, the process in which inherited characteristics within populations change over time; the process defined by Darwin as “descent with modification”
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