Tuesday, January 17, 2012

Blog 8: Bacteria vs Prion vs Virus

Bacteria : A member of a large group of unicellular microorganisms lacking organelles and an organized nucleus, including some that can cause disease.

Virus :
an ultramicroscopic, metabolically inert, infectious agent that replicates only within the cells of living hosts, mainly bacteria, plants, and animals: composed of an RNA or DNA core, a protein coat, and, in more complex types, a surrounding envelope.
 
Prion :  a tiny proteinaceous particle, likened to viruses and viroids, but having no genetic component, thought to be an infectious agent in bovine spongiform encephalopathy

Bacteria similarities and differences of a prion :
-are unicellular
-adaptations in the moist environment
-uses a flagella to travel
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-bacterias :
have no nucleus while a viruses do
are bigger in size then prions
are composers of the environment
are unicellular

-prions :
has a nucleus
is multicellular
has cilia
require a moist environment

Similarties and differences between a virus and a bacteria :
-harmful to the host
-have DNA 
-have a nucleus
-is able to survive extreme weather/environment conditions
-smaller then eukaryotic micros
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bacteria has a cell wall
bacteria can reproduce on its own
bacteria are considered living micros
viruses has a protein coat
viruses need a host in order to reproduce
viruses are not accounted as a living micro
viruses tend to cause more major damages to it's host then bacteria

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