Question

The bacterial cell wall is composed of
A. Hemicellulose
B. Peptidoglycan
C. Polysaccharides
D. Glycoproteins

Answer 1

Hint: The structure of cell wall changes among species such as land plants, bacteria, fungi, algae and may depend upon cell type and formative stage.

Complete Answer:
- A cell wall is a layer situated external to the cell film in microorganisms. A peptidoglycan cell wall in bacteria made out of disaccharides and amino acids gives them basic help. There are two fundamental kinds of bacterial cell walls, those of gram-positive and those of gram-negative microscopic bacteria, which are separated by their Gram recoloring attributes.
- For both these kinds of microscopic organisms, particles of around 2 nanometer can go through the peptidoglycan. The cell wall in bacteria has various abilities during their development, including keeping up bacterial cell uprightness and shape just as opposing inner weight.
- Besides, it must stay adaptable to oblige the renovating that is required for cell division and development. The Peptidoglycan or murein is a polymer consisting of sugars and amino acids that shapes a layer which is similar to mesh-like structure outside the plasma film of the microorganisms or bacteria, framing the cell wall.
From the above information, we can conclude that the bacterial cell wall is composed of Peptidoglycan.

Thus, the correct option is B.

Note: Polysaccharides are found in the cell walls of plants and animals. Glycogen is a polysaccharide which is found in animal cell walls. Cellulose is the polysaccharide which is found in plant cell walls. The bacterial cell wall comprises essentially a peptidoglycan which is a mesh of polysaccharide strands cross-connected by means of short peptide spans appended. A hemicellulose is one of various heteropolymer, for example, arabinoxylans, present alongside cellulose in practically all earthbound plant cell walls. Glycoproteins work in the structure, generation, immunity, hormones and protection of cells and life forms. Glycoproteins are found on the outside of the lipid bilayer of cell films.