Problem :
What characteristics distinguish archaebacteria from eubacteria?
The cell walls of eubacteria are made of peptidoglycan, while archaebacterial
cell walls can be composed of several diffferent compounds. Also, archaebacteria
tend to live in much harsher environments than eubacteria.
Problem :
How closely related are archae- and eubacteria?
The two Moneran groups are no more closely related to each other than each is to
the eukaryotes.
Problem :
What characteristic unifies archae- and eubacteria in the Kingdom Monera?
The archae- and eubacteria are prokaryotes.
Problem :
By what characteristic are archaebacteria classified? What are the four types of
archaebacteria?
They are classified according to the environments in which they live. The four
types are methanogens, thermoacidophiles, sulfur reducers, and halophiles.
