| A | B |
| response | reaction to a stiumlus |
| bahavior | complex set of responses |
| cell division | increase in cell number |
| cell enlargement | increase in cell size |
| development | the process by which an adult is produced |
| bioethics | right and wrong applied to biology |
| phylogeny | the study of evolutionary history of an organism |
| objective lens | lens closest to the speciman |
| independent variable | manipulated variable |
| dependent variable | responding variable |
| model | visual, verbal or mathematical explanation for data |
| sampling | a small sample represents a whole population |
| cell centrifugation | separation by density |
| theory | most probable explanation for a set of data |
| Anton van Leeuwenhoek | Father of the Microscope |
| LM | light microscope |
| SEM | scanning electron microscope |
| TEM | transmission electron microscope |
| resolution | ability to distinguish between two objects that are close together |
| ocular lens | eyepiece |