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A Tiny Percentage of Prokaryotes Are Pathogens

Question 222

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A tiny percentage of prokaryotes are pathogens.All known pathogenic prokaryotes are bacteria, although many archaeal species live with humans and other eukaryotes.What explains this phenomenon?


A) Lateral gene transfer of virulence genes only occurs between bacteria.
B) Bacteria are more closely related to eukaryotes and are therefore better evolved to evade host defenses.
C) Pathogenic traits evolve relatively rarely and do not appear to have evolved in the viruses or plasmids that infect archaea.
D) Archaea are too distantly related to eukaryotes to possess the ability to infect them.
E) Archaea lack the ability to forcibly enter a host, because they lack peptidoglycan.

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