Biology Midterm 1/5
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Created by:
sahasalemhigh Plus on January 15, 2010
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11 terms
Terms | Definitions |
|---|---|
 Reproduction | Needed for a species to survive |
| unicellular | containing one cell |
| irritability | the ability of an organism to respond a stimulus |
| anabolism | building up |
| catabolism | breaking down |
| metabolism | all of the chemical reactions that occur in an organism |
| sexual reproduction | two cells from different parents unite to form the first cell of a new offspring |
| homeostasis | the maintenance of a stable internal environment |
| DNA | Deoxyribonucleic acid, unique genetic material found in all living things |
| RNA | ribonucleic acid, a single-stranded nucleic acid that passes along genetic messages |
| viruses | not living because they cannot reproduce without a host (living organism) |
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