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Life Characteristics
Term | Definition |
---|---|
energy | needed to carry out daily functions |
homeostasis | ability to maintain a stable internal environment despite the external conditions |
autotroph | makes their own food |
cell | basic unit of structure and function |
adaptation | a feature of an organism that allows them to most likely survive and reproduce becoming better suited for their environment |
reproduction | making more of own kind by passing on genetic information |
asexual reproduction | requires 1 parents; produces identical offsprings |
sexual reproduction | requires 2 parents to combine genetic information; produces genetically different offsprings |
biology | study of life |
DNA | made up of nucleotides and provides hereditary information |
heterotroph | cannot make their own food; must take in food to meet energy needs |
evolution | describes how life has changed over time; process of different kinds of living organisms are thought to have developed and diversified from earlier forms during the history or the earth |
metabolism | sum of all chemical processes that occur in an organism in order to maintain life |
growth | occurs from cell division--formation of 2 cells from an existing cell to increase in physical size |
development | process by which an adult organism arises |
reproduction | not essential for an individual organism; but essential for the continuation of species |
organization | that structure or arrangement of related or connected items; cells, tissues, organs, organ systems describes |
multicellular | containing many cells |
response | an reaction to a stimulus |
stimuli | a thing or event that causes a specific reaction |
organism | an individual animal, plant, or single celled life form |
species | a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding |
cell division | the division of a cell into two daughter cells with the same genetic material |
unicellular | characterized by the formation or presence of a single cell |
multicellular | having or consisting of many cells |
evolve | develop over successive generations as a result of natural selection |
natural selection | the process whereby organisms better adapted to their environment tend to survive and produce more offspring |
differentiation | the normal process by which a less specialized cell undergoes maturation to become more distinct in form and function |
ecology | the branch of biology that deals with the relations of organisms to one another and to their physical surroundings |