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23 Cards in this Set
- Front
- Back
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biology
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the study of life
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organization
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is the high degree of order within an organism's internal and external parts and it's interactions with the living world
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cell
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the smallest unit that can preform all of life's processes
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unicellular
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made up of one cell
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multicellular
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made up of multiple cells
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organs
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structures that carry out specialized jobs within an organ system
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tissues
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groups of cells that have similar abilites and that allow the organ to function
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organelles
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tiny structures that carry out functions necessary for the cell to stay alive
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biological molecules
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the chemical compounds that provide physical structure and that bring about movment, energy use, and other cellular functions. made up of atoms
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stimulus
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a physical or chemical change in the internal or external enviroment
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homestasis
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is the maintenance of a stable level of internal conditioins are constantly changing
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metabolism
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the sum of all the chemical reactions that take in and tranform energy and materials from the enviroment
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cells division
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the formation of two new cells from an existing cell
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development
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the process by which an organism becomes a mature adult
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reproduction
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organisms produce new organisms like themselves
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gene
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a short segment of dna that contains the instructions for a single trait of an organism
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domains
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sudivisions of organisms
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kingdoms
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system of grouping organisms divides all life into six major categories
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ecology
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the branch of biology that studies organisms interacting with each otherand the enviroment
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ecosystems
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are communites of living species and their physical enviroments
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evolution
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the process in which the inherited characteristics within populations change over generations
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natural selection
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organisms that have certain favorable traits are better able to survive and reproduce sucessfully than organisms that lack these traits
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adaptaions
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traits that improve an individuals abillity to surviveand reproduce
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