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Biological Organizat
iLearn Biology
| Question | Answer |
|---|---|
| Reductionism | Learning about a structure by studying its parts. |
| Emergent properties | Characteristics not found at lower levels. |
| Atom | The smallest unit of a chemical element. |
| Molecules | Atoms combine chemically to form these. |
| Macromolecules | A very large organic molecule. |
| Organelles | Specialized structures within a cell. |
| Cell | The basic unit of life. |
| Tissue | During the evolution of multicellular organisms, cells associate to form this. |
| Organs | In most complex organisms, tissues organized into functional structures. |
| Organ System | In animals, biological functions performed by a coordinated group of tissues and organs. |
| Organism | A living system containing one or more cells. In animals, it also contains organ systems that perform precise functions. |
| Population | A group of organisms of the same species that live in a defined geographic area at the same time. |
| Community | An association of populations of different species living together in a defined habitat with some degree of interdependence. |
| Ecosystem | The interacting system that encompasses a community and its nonliving, physical environment. |
| Biosphere | All of Earth’s living organisms, collectively. |
| Ecology | A discipline of biology that studies the interrelations among living things and their environments. |