| classification | | a living thing |
| genus | | the factor the scientist changes in an experiment |
| response | | an organism with cells that contain nuclei and other cell structures |
| eukaryote | | an organism whose cell lacks a nucleus and some other cell structures |
| cell | | an experiment in which all factors are identical except one |
| autotroph | | the scientific study of how living things are classified |
| evolution | | the process of grouping things based on their similarities |
| stimulus | | a classification grouping that contains similar, closely related organisms |
| prokaryote | | many-celled |
| species | | a group of similar organisms that can mate and reproduce fertile offspring in nature |
| variable | | a change in an organism's surroundings that causes it to react |
| binomial nomenclature | | the process by which species gradually change over time |
| homeostasis | | an action or change in behavior as a result of a stimuls |
| controlled experiment | | organisms that make their own food |
| heterotroph | | basic unit of structure and function in an organism |
| multicellular | | the naming system for organisms in which each organism is given a two-part name |
| organism | | organisms that cannot make their own food |
| development | | single-celled |
| taxonomy | | the process of change that produces a more complex organism |
| unicellular | | the maintenance of stable internal conditions despite changes in the surroundings |