Difference between Eubacteria and Archaebacteria

Eubacteria

Monerans can be classified into three major groups: the eubacteria (True bacteria), cyanobacteria (blue green algae) and archaebacteria (ancient bacteria). The eubacteria are the commonly encountered bacteria in soil, water and living in or on larger organisms, and include the Gram positive and Gram negative bacteria.

Archaebacteria: Purple Sulphur Bacteria

The archaebacteria grow in unusual environments such as salt brines, hot springs and in the ocean depths. They are a group of most primitive prokaryotes which are believed to have evolved immediately after the evolution of the first life. They are of three types:-methanogens, Halophiles and thermoacidophilies. 

Difference Between: 

Eubacteria and Archaebacteria

No	Character	Eubacteria	Archaebacteria
1.	Habitat	Present every where	Mostly inhabit in extreme environmental conditions.
2	Cell wall	Peptidoglycan with muramic acid.	Variety of types, no muramic acid.
3	Membrane lipids	Ester linked, straight -chained fatty acids are present containing L-glycerol phosphate.	Ether linked branched aliphatic chains are present containing  D-glycerol phosphate.
5	DNA Dependent RNA polymerase	Simple  subunit pattern	Complex subunit pattern similar to eukaryotic enzyme
6	tRNA	Thymine present in most tRNAs N-formylmethionine (f met) carried by initiator tRNA	No thymine in TᴪC arm of tRNA methionine (met) carried by initiator tRNA
7	Intron	Introns are absent	Introns are present