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Chapter 1.1
The World of Biology
Term | Definition |
---|---|
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 |
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 |
Organelle | One of the small bodies that are found in the cytoplasm of a cell and that are specialized to perform a specific function |