Question

Peptidoglycan compound, murein is present in the cell wall of
(a) Plant
(b) Animal
(c) Bacteria
(d) Algae

Answer 1

Hint: The members of the kingdom Monera have murein in the cell wall composition and the cell wall constituents depart a unique identity of this kingdom members.

Complete answer:
The bacteria are the unicellular prokaryotic organisms that have a different cell wall composition.
All bacterial cells are covered by a strong and rigid cell wall. It is made up of two important sugar derivatives known as N-acetyl glucosamine and N-acetylmuramic acid.
One of the unique components of the bacterial cell wall is peptidoglycan or muropeptide known as murein. This is a characteristic feature of the cell wall of Bacteria.

Additional information:
Few characteristics of Bacteria are:
-These are the smallest cell walls having prokaryotes.
-Monera are typically unicellular organisms. The genetic material is naked circular DNA but no nuclear envelope is present.
-Most organisms have a rigid cellular wall made up of peptidoglycan.
-The kingdom Monera includes true bacteria.
-If flagella are present it is made up of flagellin protein. It is used in locomotion.
-Reproduction is mainly asexual by binary fission or budding.

So, the correct answer is ‘bacteria’.

Note:
-Gram staining method was introduced by Hans Christian Gram. This is a specific technique used to classify bacteria into two groups of Gram + and gram - bacteria.
-Gram-positive bacteria retain the purple stain and gram-negative bacteria can be seen after staining with safranin.
-The study of bacteria is called bacteriology and Antony Van Leeuwenhoek is known as the father of bacteriology.