NEET BIOLOGY

Detailed explanation-1: -Prokaryotic Eubacteria includes bacteria with cell walls consisting of peptidoglycan. However, not all bacteria have cell walls. But all eubacteria have a cell membrane. Bacterial cell membranes consist of glycerol and fatty acid combined together by an ester bond.

Detailed explanation-2: -Like Eubacteria, Archaea contain a cell wall composed of various polysaccharides and glycoconjugates.

Detailed explanation-3: -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-4: -Peptidoglycan (murein) is an essential and specific component of the bacterial cell wall found on the outside of the cytoplasmic membrane of almost all bacteria (Rogers et al., 1980; Park, 1996; Nanninga, 1998; Mengin-Lecreulx & Lemaitre, 2005).

Detailed explanation-5: -The bacterial cell wall consists of peptidoglycan, an essential protective barrier for bacterial cells that encapsulates the cytoplasmic membrane of both Gram-positive and Gram-negative bacterial cells. Peptidoglycan is a rigid, highly conserved, complex structure of polymeric carbohydrates and amino acids.