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Chapter1.1
Vocabulary
Term | Definition |
---|---|
biology | The study of life |
organization | the high degree of order within an organism's internal and external parts in its interactions with the living world. |
cell | The smallest unit that can perform all the life's processes. |
unicellular | Organisms that are made up of one cell. |
multicellular | Organism's that are made up of multiple cells. |
organ | Structures that carry out specialized jobs within the organ system. |
tissue | Groups of cells that have similar abilities and that allow the organ to function. |
organelle | Tiny structures that carry out functions necessary for the cell to stay alive. |
biological molecule | Chemical compounds that provide physical structure and that bring about movement, energy use, and other cellular functions. |
homeostasis | The maintenance of a stable level of internal conditions even though environmental conditions are constantly changing. |
metabolism | The sum of all the chemical reactions that take in and transform energy and materials from the environment. |
cell division | The formation of two cells from an existing cell. |
development | The process by which an organism becomes a mature adult. |
reproduction | When organisms produce new organisms like themselves. |
gene | A short segment of DNA that contains the instructions for a single trait of an organism. |