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Vocab. Chp. 1 sect.
Vocabulary from sect. 1 in biology.
Question | Answer |
---|---|
Biology | Study of life |
Cell | The smallest unit that can perform all life's processes |
Organization | Is the high degree of order within an organism's internal and external parts and in its interractions with the living world |
Unicellular | An organism with only one cell |
Multicellular | Organisms that are made up of multiple cells |
Organs | Are structures that carry out specialized jobs within An organ system |
Tissues | Are groups of cells that have similar abilities and that allow the organ to function |
Organelles | Are tiny structures that carry out functions necessary for the cell to stay alive |
Biological molecules | In the organelle. They are chemical compounds that provide physical structure and that bring about movement, energy use, and other cellular functions |
Homeostasis | Is the maintenance of a stable level of internal conditions even though environmental conditions are constantly changing |
Metabolism | Is the sum of all the chemical reactions that take in and transform energy and materials from the enviroment |
Cell division | Is the formation of two new cells from an existing cell |
Development | Is the process by which an organism becomes a mature adult |
Reproduction | All organisms produce new organisms like themselves |
Gene | A short segment of DNA that contains the instructions for a single trait of an organism |