| A | B |
| Biology | The Study of Life |
| Order | A taxonomic rank used in the classification of organisms |
| Regulation | The ability to control and maintain a particular function |
| Growth | Development from a simpler to a more complex organism |
| Development | The act or process of growing |
| Homeostasis | Regulation to help maintain balance |
| Energy Utilization | Measure of total energy |
| Response | Any behavior as a result of an internal or external stimuli |
| Stimulus | Something that axcites an organism or part into action |
| Reproduction | The natural process of producing new individuals |
| Evolution | The process of adapting over time |
| Cell | The basic structural unit of all organisms |
| Biosphere | Ecosystem encompassing the Earth and the living systems that inhabit it |
| Ecosystem | Interaction of a community of organisms with their environment |
| Community | Many groups of organisms living within a given area |
| Population | All of the individuals of one species in a given area |
| Organism | A complex system creating an individual life form |
| Organ System | Organs acting together to perform a particular task |
| Tissue | An aggregate of similar cells with a specific function |
| Molecule | Smallest unit of an element or compound |