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26 terms

biology ch 19

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caspid
the protein coat by bacteria to attach to surfaces
pili
hair like structures used by bacteria to attach to surfaces
flagella
whip like tail used to move some bacteria
nucleoid region
area in prokaryotes where DNA is found
lysogenic cycle
viral cycle in which the virus does not kill the cell immediatly
lytic cycle
viral cycle in which the virus kills the cell.
pathogen
disease causing bacteria or virus
bacteriophage
viruses which attack or inffect bacteria
cocci
spherical shaped bacteria
bacilli
rod shaped bacteria
spirillum
the spirial shaped bacterial
conjugation
the exchange of DNA between two bacteria
obligate aerobes
organisms which require oxygen to live.
obligate anaerobes
organism which do not require oxygen to live.
facultative anaerobes
organism taht can live in the prescence of oxygen but don not require oxygen
chemoautotrophs
organisms which produce there own food by using any organic chemicals
photo autotrophs
organisms which produce there own food in the prescence of light
peptidoglycan
compound found in the cell wall of bacteria
binary fission
the process which split bacteria into two new cells
endospore
a tough covering over the cell wall of a bacterium whcih proctexts the bacteria during harsh conditions
propage
a piece of viral DNA which becomes part of the host cells DNA
retrovirus
a virus which contains RNA instead of DNA
vaccine
Preventive meausres against viruses
antibotics
man made antibodies to aid bacteria infection
viroid
a naked piece of DNA which infects plants
prion
a short protein which causes diseases in animals