| A | B |
| Cell | basic unit of life |
| Objective | all can observe |
| Tissue | made up of similar cells |
| Population | all members of species in an area |
| Ecosystem | all communities & physical environment |
| Community | all populations in an area |
| Biosphere | all ecosystems on earth |
| Organism | individual living thing |
| Producers | provide ecosystem's food |
| Consumers | use food from producers |
| Decomposers | recycle dead organisms |
| Subjective | based on opinion or emotion |
| Prokaryotic Cell | simpler, no nucleus |
| Eukaryotic Cell | complex, has nucleus |
| Genes | made of DNA |
| Supernatural | beyond nature |
| Species | type of organism |
| Protists | ex:protozoans |
| Fungi | ex:mushrooms |
| Plants | ex:trees |
| Animals | ex:mammals |
| Theory | well-supported after many tests |
| Cell Theory | all organisms made of cells |
| Biogenesis Theory | life comes only from life |
| Gene Theory | DNA determines characteristics |
| Evolution Theory | species change over time |
| Discovery Science | observe & describe |
| Hypothesis-Based Science | predict & experiment |
| Hypothesis | "educated guess" |
| Data | results of experiment |
| Control | used for comparison |
| Falsifiable | can be shown to be false |
| Testable | can be checked for validity |
| Sampling Error | subset not same as whole |
| Natural Selection | "survival of the fittest" |
| Homeostasis | stays ~constant inside |
| Development | changes over lifetime |
| Competition | not enough resources for all |
| Spontaneous Generation | life from nonliving - false! |