Biology quiz 1
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18 terms
Terms | Definitions |
|---|---|
 atom | the smallest part of an element that can still keep the characteristics of that element |
| biome | a regional type of ecosystem that has a distinctive climate with organisms adapted to that area |
| biosphere | the region of air, water and land around earth where life exists |
| cell | the smallest unit that can live and reporduce either independently, or with many other cells |
| community | populations of species living and interacting together in an area; the living (biotic) part of an ecosystem |
| Earth | third planet from the Sun; commonly divided into three major parts, solid earth, hydrosphere (water), and atmosphere |
| ecosystem | a biological community interacting with its nonliving/physical (abiotic) enviorment |
| electron | a negatively charged subatomic particle found outside the nucleus of all atoms |
| molecule | a unit in which two or more atoms are bonded together |
| neutron | an electrically neutral subatomic particle found in the nucleus of most atoms |
| organ | a group of tissues working together to do a special function or job |
| organelle | a membrane-bound area within a eukaryotic cell that has a special function or job |
| organism | one member of a species. Can be single-celled or multicellular |
| population | a group of individual of the same species, living in the same area, who interbreed |
| proton | a postively charged subatomic particle found within the nucleus of all atoms |
| species | a group of similar organisms that can sexually reproduce and have fertile offspring |
| system | a set of parts that work together as a whole, e.g, parts of an organism, a river, the Earth, etc |
| tissue | a group of cells working together to do a special function or job |
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