| A | B |
| anatomy | study of biological structure |
| biogeography | study of the distribution of species |
| botany | study of plants |
| cell biology | study of cells involving cytology, genetics, and biochemistry |
| closed system | a system in which energy neither enters nor leaves |
| control | part of experiment where experimental variable remains constant |
| cytology | study of cellular anatomy |
| ecology | study of the interactions between living organisms and their environments |
| genetic engineering | taking specific DNA from one cell and expressing it in another |
| genetics | study of heredity |
| geography | study of the distribution of features on planetary surfaces |
| hypothesis | a falsifiable explanation of a natural phenomenon that can be tested by experimentation |
| morphology | structure |
| physiology | study of organismal function |
| principle | theory that is supported so well by evidence that it is unlikely to be changed |
| science | study of natural phenomena |
| scientific method | framework for testing new explanations of natural phenomena |
| taxonomy | science of naming biological organisms |
| theory | hypothesis that is supported by experimental evidence |
| variable | factor that affects the behavior of a system |