Chapter 19 The Diversity of Viruses, Prokaryotes, and Protists Vocabulary Amoeba Anaerobe – prokaryotes that don’t require oxygen for their metabolism Bacteriophage – viruses that infect other bacteria. cilia endospore flagellum host nitrogen-fixing bacterium – bacteria in the ground that get nitrogen from the air for plants to use. Pathogenic – disease producing phytoplankton prion protist protozoa – non photosynthetic single celled protists pseudopod – created by cellular slime molds to get foods viroid virus zooflagellate Things to Know 1. What are the two parts of a virus? 2. How do viruses reproduce? 3. What do we mean when we say a virus is host-specific? Know some examples. 4. What do anti-viral drugs do? Target enzymes the viruses need to replicate 5. What organisms do viroids infect? 6. What is the most widespread infectious disease of humans caused by a prion? 7. What features separate members of the domains Bacteria and Archaea?
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