What is Biology? The science of living organisms and life processes, including the study of structure, functioning, growth, origin, evolution and distribution of living organisms

Organism An individual living thing

All organisms… Consist of one or more cells Reproduced based on DNA Gain energy from their environment via metabolism Maintain a separate internal environment

atom cell tissueorganorgan system molecule

community multicelled organism population ecosystem the biosphere

The Organization of Life Cell Tissue Organ Organ System Multicellular Organism Population Community Ecosystem Biosphere

Scientific Theory –An explanation of the cause or causes of a range of related phenomena. –Scientific theories, unlike common theories, have been rigorously tested but are still open to testing, revision, and tentative acceptance or rejection.