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 | the smallest unit that can perform life processes |
unicellular | organisms made up of one cell |
multicellular | organisms made up of more than one cell |
organs | structures that carry out jobs in the organ system |
tissues | groups of cells with similar abilities and allow and organ to function |
organelles | tiny structures that carry out functions for a cell |
biological molecules | chemical compounds that provide physical structure and that bring movement |
metabolism | the sum of all the chemical reactions that take place and transforms materials in an environment |
domains | the three major subdivisions of organisms (bacteria, archea, and eukarya) |
kingdoms | the system of grouping that divides life into six groups and is inside domains |
ecology | the branch of biology that studies organisms interacting with each other in the environment |
ecosystems | communities of living species and their physical environments |
evolution | how organisms change over time |
natural selection | animals with favorable traits I've longer than others with less favorable traits |
adaptations | traits that improve an individuals ability to survive |
metric system | the single and standard unit of measurement for scientists |
base units | the seven fundamental units that describe quantities such as length, mass, and time |