Courses for Kids
Free study material
Offline Centres
Store Icon

The cell wall of prokaryotes are made up of
(a) Cellulose
(b) Proteins
(c) Peptidoglycan
(d) Protein and fats

Last updated date: 23rd May 2024
Total views: 406.8k
Views today: 12.06k
406.8k+ views
Hint: Prokaryotic cell wall is made up of polymer amino acids & sugar.

Complete answer: Prokaryotes are single celled organisms and their cells are much smaller than cells of eukaryotes. Prokaryotes lack nucleus and cell organelles.

These cells are enclosed by a rigid cell wall. The cell wall is made up of a large polymer of some amino acids and carbohydrates. The polymer is known as peptidoglycan. It is made up of glycan (disaccharide) chains of repeating N-acetylglucosamine(NAG) and N-acetylmuramic acid (NAM) residues.

These residues are cross-linked by peptide side chains. The peptides contain some D-amino acids along with the regular L-amino acids. This feature makes the peptidoglycan unique. There is a high level of diversity in the peptide sequences or the amino acids in different species of prokaryotic organisms.
Peptidoglycan is commonly called ‘murein’. It provides a stiff structure that gives the cell its shape and surrounds the cytoplasmic membrane. The cell wall is located below the capsule of the organism.
If the organism is a pathogen, its peptide (which becomes an antigenic peptide) can elicit immune response in the infected person.
Cellulose is a component of plant cell wall and proteins like chitin are constituent of fungi cell wall.

So, the correct option is C. Peptidoglycan.

Note:The cross linking between NAG and NAM provides the peptidoglycan its rigidity or stiffness. The stiffness protects the prokaryotic cell from physical abrasion.