bacteria vs. archaea

[Parker@]

Hey, anyone knows the differences and similarities between bacteria and archaea??? Second, some scientists believe archaea are more closely related to eukaryotes then prokaryotes do you agree/disagre?

[MrMistery]

For the first question:
Similarities:
-both are procaryotes(and everything that this includes)
Differences:
-the DNA of Archea has introns
-the 16S ribosomal RNA in the small subunit of Archea ribosoms resembles more to the 18S rRNA of eukaryotes that the 16S of bacteria
-the lack of murein in the cell wall of Archea, when it is present
-the very different composition of lipids in the cell membrane
-different behaviour towards toxins and antibiotics

For the second question. It does not really matter if i or another member on the forum agrees/disagrees. We are scientists and the only thing influencing our decision should be facts, not opinions. Scientists formulated this statement on facts, some of them presented by me above, and we should aknoledge their decision

[mith]

Eubacteria only-
Peptidoglycan in cell wall.
Simple RNA polymerase

[mmantle7]

I believe the conventional view is that eukaryotes evolved from archea (with the exception of the mitochondria and chloroplasts which were originally seperate bacteria that engaged in symbiosis with a eukaryote cell).

[victor]

hey, is it true that some bacteria now have organelles?