What is archaebacteria comprised of?

Answer 1

Archae is the third major domain of life on earth with similarities to both Eukaryotes and Prokaryotes. Their main differentiating features are that they have different rRNA genes on their 17s small ribosomal subunit, ether linked fatty acids (as opposed to ester links in the other 2 domains), a cell wall similar to gram positive baceria yet lacking peptidoglycan and instead having pseudopeptidoglycan, as well as major differences in the structure of their flagella.

Archae are most widely known for their presence in highly inhospitable environments and are known as extremophiles.