In Archaebacteria, which one is present in the cell wall?

✅Explanation:
-Archaebacteria, or archaea, are a domain of single-celled microorganisms distinct from bacteria and eukaryotes.
-While they share some similarities with bacteria, their cell wall composition is different.
-Archaea cell walls do not contain murein (peptidoglycan), which is a characteristic component of bacterial cell walls.
-Instead, some archaea have cell walls containing pseudomurein, also called pseudopeptidoglycan.
-Pseudomurein is similar in structure and function to murein but has some key chemical differences that make it resistant to lysozyme and certain antibiotics that target bacterial cell walls.

🔑Key Points:
-Bacteria are the sole members of the Kingdom Monera. They are the most abundant micro-organisms.
-On the basis of origin, bacteria can be divided into two types – Archaebacteria & Eubacteria

• Archaebacteria:
-These bacteria are special since they live in some of the harshest habitats such as extreme salty areas (halophiles), hot springs (thermoacidophiles) and marshy areas (methanogens).
-Archaebacteria differ from other bacteria in having a different cell wall structure and this feature is responsible for their survival in extreme conditions.
-For example – Methanogens are present in the gut of several ruminant animals such as cows and buffaloes and they are responsible for the production of methane (biogas) from the dung of these animals.
🛑Additional Information

• Eubacteria:
-There are thousands of different eubacteria or ‘true bacteria’.
-They are characterised by the presence of a rigid cell wall, and if motile, a flagellum.
-The Eubacteria can be both autotrophic & heterotrophic.