Saturday, January 7, 2012

Comparison of virus, bacteria, protist

Compare a bacteria to a virus to a protist.


A virus is an infectious agent that can replicate the things inside of a cell organism.
A bacteria is a domain of prokaryotic microorganisms.
A protist is a group of eukaryotic microorganisms.


bacteria compared to a virus: 
similarities
-can survive extreme weather
-have DNA nucleus 
-smaller than eukaryotic cells
-can be parasitic or helpful
differences:
-bacteria are living organisms, virus is not
-bacteria reproduce on it's own/ asexually where as virus needs a host
-virus have protein coat but bacteria: cell walls
-virus is deadlier than bacteria, can be dangerous and lives longer


protist compared to bacteria:
similarities
-unicellular 
-uses flagellum to maneuver
-auto and heterotrophic
-live in moist environment
-very small/ microscopic in size
-can be deadly or beneficial
-are living organisms unlike virus
differences:
-bacteria: smaller
-bacteria: only unicellular
-bacteria: can be everywhere
-bacteria: no nucleus
-protist: multicellular
-protist are not as small as bacteria
-protist: moist areas
-protist have a nucleus
-protist are pseudopods and cilia
-protist: usually = virus


protist




bacteria






virus




sources:
http://www.uic.edu/classes/bios/bios104/mike/bacteria01.htm
Campbell 6th Edition

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