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| Term | Definition |
|---|---|
| the study of life | biology |
| the high degree of order within an organism's internal and external parts and in its interactions with the living world | organization |
| in biology, the smallest unit that can perform all life processes; cells are covered by a membrane and contain DNA and cytoplasm | cell |
| describes an organism that consists of a single cell | unicellular |
| describes a tissue, organ, or organism that is made of many cells | multicellular |
| a collection of tissues that carry out a specialized function of the body | organ |
| a collection of specialized cells and cell products that perform a specific function | tissue |
| one of the small bodies that are found in the cytoplasm of a cell and that are specialized to perform a specific function | organelle |
| chemical compound that provides physical structure and brings about movement, energy use, and other cellular functions | biological molecule |
| the steady-state physiological condition of the body | homeostasis |
| the sum of all chemical processes that occur in an organism | metabolism |
| the formation of two cells from one existing cell | cell division |
| the gene-directed process by which an organism matures | development |
| the process of producing offspring | reproduction |
| a short segment of DNA that contains the instructions for a single trait | gene |