| A | B |
| prokaryote | cellular organisms without a nucleus |
| eukaryote | cellular organisms having a true nucleus |
| helminths | worms |
| virus | acellular biologic entity |
| taxonomy | classifying living things |
| nomenclature | naming organisms |
| identification | discovering/recording traits to classify organisms |
| mycology | study of fungi |
| virology | study of viruses |
| phycology | study of algae |
| bacteriology | study of prokaryotes |
| protozoology | study of protozoans |
| parasitology | study of parasites |
| hyphae | long, thread-like branch of mold |
| yeast | one-cell fungi |
| mold | multi-cell fungi |
| di-morphic fungi | can exist as yeast or mold |
| cyst | dormant stage of protozoa |
| trophozoite | active, feeding stage of protozoa |
| mastigophora | protozoa move by flagella |
| ciliates | protozoa move by cilia |
| sarcodina | protozoa move by pseudopodia |
| sporozoa | protozoa that do not move |
| trematodes | flat worms |
| nematodes | round worms |
| capsid | protein shell surrounding viral particle |
| bacteriophage | bacteria infecting virus |