NEET BIOLOGY

Detailed explanation-1: -Archaea are prokaryotic cells. Unlike the Bacteria and the Eukarya, the Archaea have membranes composed of branched hydrocarbon chains (many also containing rings within the hydrocarbon chains) attached to glycerol by ether linkages (Figure 1.3. 3). The cell walls of Archaea contain no peptidoglycan.

Detailed explanation-2: -The domain of unicellular prokaryotes that have cell walls that do not contain peptidoglycan is called Archaea.

Detailed explanation-3: -Answer and Explanation: The domain of unicellular prokaryotes that have cell walls containing peptidoglycan is Bacteria.

Detailed explanation-4: -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-5: -Wall-Less Forms: Two groups of bacteria devoid of cell wall peptidoglycans are the Mycoplasma species, which possess a surface membrane structure, and the L-forms that arise from either Gram-positive or Gram-negative bacterial cells that have lost their ability to produce the peptidoglycan structures.