| A | B |
| Theory | A logical explanation of events |
| Spontaneous Generation | The theory that living things can come from nonliving materials. |
| Biogenesis | The theory that living things come from living things |
| Francesco Redi | In 1668, first to create "controlled" fly and maggot experiment to test Spontaneous Generation |
| Lazzaro Spallanzani | In 1768, Believed microorganisms come from the air-first to boil |
| Louis Pasteur | In 1859, proved Biogenesis theory and created "Pasteurization" |
| Cell Theory | 3 Part Theory explaining cells |
| Redi's Control Group | Uncovered Jar with meat |
| Redi's Experimental Group | Net Covered Jar with meat |
| Microorganisms | Name for Microscopic life |
| Microbes | Name for Microscopic life |
| Rudolf Virchow | Plants and Animals are made of cells |
| Theodore Schwann | Only animals are made of cells |
| Matt Schleiden | Only plants are made of cells |
| Bio | Life |
| Genesis | Beginning |
| Microscopes | Tool that proved biogenesis theory |
| Cells | Basic unit of life |