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| living things; organisms can be either multicellular or unicellular |
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| groups of similar cells that work together to perform a function |
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| two or more tissues grouped together to form a structural and functional unit |
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| a group of organs that function together to carry out the principal activities of an organism |
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| is a group of interbreeding natural populations that are reproductively isolated from other such groups. |
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| consists of the individuals of a given species that occur together at one place and at one time |
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| is a community and its physical environment, including all the interactions among organisms and between organisms and the environment. |
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| DNA) (de-OK-see-RYE-boh-new-KLAY-ick) the hereditary material; DNA controls all cell activities and determines all of the characteristics of organisms |
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| the descent, with modification, of different lineages from common ancestors |
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| literally, “two-name naming”; the system of determining the scientific name of an organism using its genus and species classifications; thus, an organism's genus becomes its first name, and its species becomes its last name |
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| the categorization of organisms into a coherent scheme |
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C1 The classification scheme increasingly used today is |
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DOMAIN KINGDOM PHYLA CLASS ORDER FAMILY GENUS SPECIES |
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| the science of classifying organisms, categorizes organisms based on their common ancestry (their evolutionary history). |
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| is the study of the diversity of organisms, focusing on their comparative relationships and their evolutionary relationships. |
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C1 three-domain system of classification |
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| Archaea, Bacteria, and Eukarya |
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