NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

KINGDOM PLANTAE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The cell wall of a prokaryotic organism is made of:
A
chitin
B
cellulose
C
neither chitin nor cellulose
D
None of the above
Explanation: 

Detailed explanation-1: -The cell wall is made up of peptidoglycan, a polymer of modified sugars (N-acetyl glucosamine and N-acetyl muramic acid) crosslinked with short peptides that makes up the cell wall of prokaryotes.

Detailed explanation-2: -Prokaryotic cell walls may be composed of peptidoglycan (bacteria) or pseudopeptidoglycan (archaea). Gram-positive bacterial cells are characterized by a thick peptidoglycan layer, whereas gram-negative bacterial cells are characterized by a thin peptidoglycan layer surrounded by an outer membrane.

Detailed explanation-3: -Prokaryotic cells have a fairly rigid cell wall but this is not made of cellulose as it is in plants. This type of cell is found in all higher animal and plant cells and contains membrane bound organelles and a well defined nucleus.

Detailed explanation-4: -How many of the following features are associated with the prokaryotic cell? Gas vacuole, single-membrane system, cytoskeleton, non cellulosic wall, microfilaments, cytoplasmic streaming, lack cell organelles.

There is 1 question to complete.