Biology Terms

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Abiotic

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Non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems.

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Atom

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The basic unit of a chemical element.

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Cell

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The smallest structural and functional unit of an organism.

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Cell Theory

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A scientific theory which describes the properties of cells.

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Cellular Respiration

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The process by which cells convert glucose and oxygen into energy, carbon dioxide, and water.

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Biotic

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Relating to or resulting from living organisms.

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Energy

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The strength and vitality required for sustained physical or mental activity.

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Hierarchy

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A system in which members of an organization or society are ranked according to relative status or authority.

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Hierarchical Organization

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The arrangement of biological organisms in a hierarchy from simplest to most complex.

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Homeostasis

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The tendency of a system, especially the physiological system of higher animals, to maintain internal stability.