bacteria and viruses
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18 terms
Terms | Definitions |
|---|---|
 biogenesis | development of life from preexisting life |
| pathogen | a virus or organism that can cause disease |
| prokaryote | A unicellular organism that lacks a nucleus and membrane bound organelles |
| extremophile | archaea that live in extreme environments |
| photoautotroph | autotrophs that use light to create energy |
| capsid | outer protein coat of a virus |
| gram positive | bacteria that have simpler walls with a relatively large amount of peptidoglycan (purple) |
| gram negative | bacteria that have less peptidoglycan and are structurally more complex (pink) |
| binary fission | the division of a prokaryotic cell into two offspring cells |
| Nitrogen fixation | process by which certain bacteria convert nitrogen gas to ammonia |
| Conjugation | In bacteria, the direct transfer of DNA between two cells that are temporarily joined. |
| endospore | a thick-walled protective spore that forms inside a bacterial cell and resists harsh conditions |
| retrovirus | virus that contains RNA as its genetic information |
| bacteriophage | viruses that infect bacteria |
| lytic cycle | cycle of viral infection; results in replication of virus and cell destruction |
| bioremediation | uses bacteria to break down pollutants |
| Commensalism | symbiotic relationship where one partner benefits & the other is unaffected |
| reverse transcriptase | an enzyme that catalyzes the formation of DNA from an RNA template |
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