NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

KINGDOM MONERA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Below, what distinguishes between Archaebacteria and Eubacteria groups is ____
A
The presence of a cell wall
B
Condition of the nuclear membrane
C
peptidoglycan thickness
D
presence of peptidoglycan
E
binary fission
Explanation: 

Detailed explanation-1: -Archaebacteria: Cell wall is composed of pseudo peptidoglycans. Eubacteria: Cell wall is composed of peptidoglycans with muramic acid.

Detailed explanation-2: -Like Eubacteria, Archaea contain a cell wall composed of various polysaccharides and glycoconjugates. Archaea lack peptidoglycan, but they still form rigid cell boundaries that confer resistance to high internal osmotic pressure.

Detailed explanation-3: -Eubacteria are called true bacteria and N-acetylmuramic and they have higher degrees of organization. Archaebacteria are called living fossils and they can survive in extremely harsh (highly acidic, high temperature, methanogenic) environments.

Detailed explanation-4: -Eubacteria are prokaryotic organisms (i.e. lacking a membrane-bound nucleus), predominantly unicellular and single cellular DNA chromosomes. They have peptidoglycan in their cell wall and usually have flagella if they are motile.

Detailed explanation-5: -Kingdom Monera contains the least organized unicellular prokaryotic microorganisms on earth. Both archaebacteria and eubacteria are unicellular microorganisms, which are usually called prokaryotes. Archaebacteria are usually found in extreme conditions whereas eubacteria are found everywhere on the surface of Earth.

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