Chapter 2 Sections 1 and 2 Quiz
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22 terms
Terms | Definitions |
|---|---|
 organism | a living thing |
| cell | the BASIC UNIT of structure and function in living things |
| unicellular | organisms made up of ONE single CELL |
| multicellular | organisms made up of MANY CELLS |
| stimulus | a change in surroundings that makes an organism react |
| response | action or change in response due to a stimulus |
| growth | process of becoming larger |
| development | process that produces a more complex organism |
| spontaneous generation | mistaken idea that living things arise from non-living sources |
| autotrophs | organisms that make their own food |
| heterotrophs | organisms that CANNOT make their own food |
| homeostasis | maintenance of stable internal conditions |
| classification | the process of GROUPING things BASED on their SIMILARITIES |
| taxonomy | the scientific STUDY of how LIVING THINGS are CLASSIFIED |
| binomial nomenclature | the SYSTEM for NAMING ORGANISMS in which each organism is given a unique, two-part scientific name |
| genus | a classification GROUPING that consists of a number of SIMILAR, CLOSELY RELATED SPECIES |
| species | a GROUP of organisms that are physically SIMILAR and CAN MATE with each other and produce offspring that can also mate and REPRODUCE |
| prokaryote | an organism whose CELLS LACK A NUCLEUS and some other cell structures |
| nucleus | the CONTROL CENTER of a eukaryotic cell that DIRECTS THE CELL'S ACTIVITIES and contains the information that determines the cell's form and function |
| eukaryote | an organism whose CELLS CONTAIN NUCLEI |
| mainipulated variable | the ONE variable that is purposely changed to test a hypothesis. |
| reproduction | the process of producing offspring that are similar to their parents. |
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