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Bio Chapter 1

TermDefinition
Biology the scientific study of living organisms and their interactions with the environment
Organization the high degree of order within an organism’s internal and external parts and in its interactions with the living world
Cell in biology, the smallest unit that can perform all life processes; cells are covered by a membrane and contain DNA and cytoplasm
Unicellular describes an organism that consists of a single cell
multicellular describes a tissue, organ, or organism that is made of many cells
Organ a collection of tissues that carry out a specialized function of the body
Tissue a group of similar cells that perform a common function
Organelle one of the small bodies that are found in the cytoplasm of a cell and that are specialized to perform a specific function
Biological Molecule chemical compound that provides physical structure and brings about movement, energy use, and other cellular functions
Homeostasis 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
metabolism the sum of all chemical processes that occur in an organism
Cell Division the formation of two cells from one existing cell
Development the process by which an organism grows
Reproduction the process of producing offspring
Gene the most basic physical unit of heredity; a segment of nucleic acids that codes for a functional unit of RNA and/or a protein
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