| A | B |
|---|
| taxonomy | the science of classifying and naming organisms |
| toxin | a poison produced by disease-causing organisms |
| vaccine | a solution made form damaged virus or bacteria particles or form killed or weakened viruses |
| virus | a microscopic particle made of either a dna or an rna core |
| rhizoid | rootlike filament containing only a few long cells it holds moss plants |
| rhizome | the undergound stem of a fern |
| fission | a type of asexual reproduction used by bacteria in which one bacerium divides to form two cells with identical genetic material |
| flagellum | a whiplike tail on bacteria and some protists tha helps them move through a moist environment |
| gene | the segment of dna on chromosome that direct the making of a specific protein |
| frond | the leaf of a fern |
| habitat | the physical location where an organism lives |
| endospore | a thick-walled structure that some bacteria produce around thems |
