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Biology Sec. 1

TermDefinition
biology the study of life
cell the smallest unit that can perform all of life's processes
unicellular describes an organism that consists of a single cell
multicellular describes an organism that consists of multiple cells
organs structures that carry out specialized jobs within an organ system
tissues groups of cells that have similar abilities and that allow the organ to function
organelles tiny structures that carry out functions necessary for the cell to stay alive
biological molecules the chemical compounds that provide physical structure and that bring about movement, energy use, and other cellular functions
homeostasis the maintenance of a stable level of internal conditions even though environmental conditions are constantly changing
metabolism the sum of all the chemical reactions that take in and transform energy and materials from the environment
cell division the formation of two new cells from an existing cell
development the process by which an organism becomes a mature adult
reproduction the process of producing offspring
gene a short segment of DNA that contains the instructions for a single trait of an organism
organization the high degree of order within an organisms internal and external parts and in its interactions with the living world
Created by: zhaberstich
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