Chapter 1 Vocab
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20 terms
Terms | Definitions |
|---|---|
 Biology | the study of life |
| Unicellular | one celled organisms |
| Multicellular | many celled organisms |
| Cell specialization | many types of cells that each with their own specific role |
| Sexual reproduction | two parents produce the new individual |
| DNA | deoxyribonucleic acid |
| Anabolism | build up of compounds |
| Catabolism | break down of compounds |
| Autotroph | organism that can make their own materials for energy |
| Heterotroph | organism that must obtain materials for energy from something else |
| Cell | basic unit of life |
| Stimulus | a change in the environment |
| Evolution | a change over large periods of time |
| Homeostasis | process by which living things keep their internal conditions stable |
| Metabolism | the combination of all chemical reactions that take place within an organism |
| Molecules | smallest units of most chemical compounds |
| Population | groups of the same organism living in the same area |
| Community | groups of different populations living together |
| Ecosystem | a community and its non living surroundings |
| Biosphere | a part of the earth that contains all the ecosystems |
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