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The World of Biology
1.1 Terms
Term | Definition |
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Biology | the study of life |
Organization | the high degree of order within an organism's internal and external parts and in its interactions with the living world |
Cell | in biology, the smallest unit that can perform all life processes; cells are covered by a membrane and contain DNA and cytoplasm |
Unicellular | describes an organism that consists of a single cell |
Multicellular | describes a tissue, organ, or organism that is made of many cells |
Organ | a collection of tissues that carry out a specialized function of the body |
Tissue | a collection of specialized cells and cell products that perform a specific function |
Organelle | one of the small bodies that are found in the cytoplasm of a cell and that are specialized to perform a specific function |
Biological Molecule | chemical compound that provides physical structure and brings about movement, energy use, and other cellular functions |
Homeostasis | the steady-state physiological condition of the body |
Metabolism | the sum of all chemical processes that occur in an organism |
Cell Division | the formation of two cells from one existing cell |
Development | the gene-directed process by which an organism matures |
Reproduction | the process of producing offspring |
Gene | a short segment of DNA that contains the instructions for a single trait |