| A | B |
| Organisms | Living things |
| Cells | The smallest units of organisms that carry of the functions of life. |
| Stimulus | Anything an organism responds to. |
| Response | The reaction of an organism to a stimulus. |
| Adaptation | The ability of an organism to change to better be able to survive its surroudings. |
| Homeostasis | The regulation of an organisms internal evironment to maintain conditions that allow it to live. |
| Development | All the changes an organism undergoes as it grows. |
| Life Span | The length of time an organism is expected to live. |
| Spontaneous Generation | Theory that states living things come from nonliving things |
| Biogenesis | The theory that states life comes from only other living organisms. |
| Scientific Method | Problem solving method that scientist use to answer questions. |
| Hypothesis | A prediction that can be tested or an educated guess. |
| Variable | The factor being tested in an experiment. |
| Control | The standard used to compare with the outcome of the test. |
| Theory | An explanation of things or events based on many observations. |
| Law | A reliable description of nature based on many observations. |
| International System of Units | SI, commonly called the metric system. |
| Mass | Is measured in grams |
| Volume | Is measured in liters. |
| Distance | Is measured in meters |