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1.5: Principles of Biology

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

TermDefinition
cell theory Theory that states that cells are the basic structural units of all organisms.
chromosome Coiled structure made of DNA and proteins; contains sister chromatids; the form of the genetic material of a cell goes during cell division.
gene Unit of DNA that is encoded with the instructions for a single polypeptide.
gene theory Theory that the characteristics of organisms are controlled by genes that are passed from parents to offspring.
homeostasis Process of maintaining a stable environment inside a cell or an entire organism.
adaptation Characteristic that helps living things survive and reproduce in a given environment.
evolution Change in the characteristics of living things over time; the change in species over time.

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Difficulty Level:
At Grade
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Date Created:
Feb 24, 2012
Last Modified:
Sep 04, 2016
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SCI.BIO.116.L.1