
‘Peptidoglycan' is a characteristic constituent of the cell wall o
A Eubacteria and unicellular eukaryotes
B Bacteria and cyanobacteria
C Archaebacteria and eukaryotes
D All members of 'Monera' and 'Protista'
Answer
439.2k+ views
Hint: Peptidoglycan, also known as murein, is a polymer made up of sugars and amino acids that forms a mesh-like layer outside of most bacteria's plasma membrane, forming the cell wall.
Complete answer:
Peptidoglycan consist of two types of sugars. The sugar component is made up of alternating residues of N-acetylglucosamine (NAG) and N-acetylmuramic acid with a -(1,4) bond (NAM).
It determines the shape of a bacterial cell and is needed for osmotic stability. Peptidoglycan is a peptide-carrying heteropolymer made up of glycan strands.
Peptidoglycan is a part of the bacterial cell wall that can be found on the outside of the cytoplasmic membrane of nearly all bacteria. A four-amino-acid short peptide is found in the side party.
Prokaryotic species include bacteria and cyanobacteria. They have a lot in common. Real cell organelles are absent in each of them. They both have a nucleoid rather than a real nucleus. In both bacteria and cyanobacteria, peptidoglycan is a key component of the cell wall. They both live in a saprophytic state of life. In terms of cell division, they're both identical.
Hence the correct answer is 'Bacteria and Cyanobacteria.
Note:
Gram-negative bacteria have a thin peptidoglycan cell wall, which is surrounded by a lipopolysaccharide-containing outer membrane. Gram-positive bacteria do not have an outer membrane, but are surrounded by peptidoglycan layers that are several times thicker than those present in Gram-negative bacteria.
Complete answer:
Peptidoglycan consist of two types of sugars. The sugar component is made up of alternating residues of N-acetylglucosamine (NAG) and N-acetylmuramic acid with a -(1,4) bond (NAM).
It determines the shape of a bacterial cell and is needed for osmotic stability. Peptidoglycan is a peptide-carrying heteropolymer made up of glycan strands.
Peptidoglycan is a part of the bacterial cell wall that can be found on the outside of the cytoplasmic membrane of nearly all bacteria. A four-amino-acid short peptide is found in the side party.
Prokaryotic species include bacteria and cyanobacteria. They have a lot in common. Real cell organelles are absent in each of them. They both have a nucleoid rather than a real nucleus. In both bacteria and cyanobacteria, peptidoglycan is a key component of the cell wall. They both live in a saprophytic state of life. In terms of cell division, they're both identical.
Hence the correct answer is 'Bacteria and Cyanobacteria.
Note:
Gram-negative bacteria have a thin peptidoglycan cell wall, which is surrounded by a lipopolysaccharide-containing outer membrane. Gram-positive bacteria do not have an outer membrane, but are surrounded by peptidoglycan layers that are several times thicker than those present in Gram-negative bacteria.
Recently Updated Pages
Master Class 11 Accountancy: Engaging Questions & Answers for Success

Master Class 11 Social Science: Engaging Questions & Answers for Success

Master Class 11 Economics: Engaging Questions & Answers for Success

Master Class 11 Physics: Engaging Questions & Answers for Success

Master Class 11 Biology: Engaging Questions & Answers for Success

Class 11 Question and Answer - Your Ultimate Solutions Guide

Trending doubts
1 ton equals to A 100 kg B 1000 kg C 10 kg D 10000 class 11 physics CBSE

One Metric ton is equal to kg A 10000 B 1000 C 100 class 11 physics CBSE

How much is 23 kg in pounds class 11 chemistry CBSE

Difference Between Prokaryotic Cells and Eukaryotic Cells

Which one is a true fish A Jellyfish B Starfish C Dogfish class 11 biology CBSE

What is the technique used to separate the components class 11 chemistry CBSE
