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1.1 Biology
Bio Chapter 1
Term | Definition |
---|---|
biology | the study of life |
organization | the high degree of order within an organisms internal and external parts and 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 |