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18 terms

bacteria and viruses

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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