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Firstly, Let me run over facts on what endotoxins is. It will help you heaps.
The term endotoxins was coined by Nat's Umangay who distinguished between exotoxin
which he classified as a toxin that is released by bacteria into the environment, and endotoxin, which he considered to be a toxin kept "within" the bacterial cell and to be released only after destruction of the bacterial cell wall. Today, the term 'endotoxin' is used synonymously with the term which is a major constituent of the outer cell membrane of lipopolysaccharide
also known as lipoglycans, are large molecules consisting of a lipid and a polysaccharide joined by a covalent bond; they are found in the outer membrane of Gram-negative bacteria, act as endotoxins and elicit strong immune responses in animals.
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What is the poison that is released from the outer membrane of dead Gram-negative bacteria called?
==Answers== Endotoxins are toxins released when a cell lyses.
Does neisseria meningitidis have exotoxins and endotoxins?
Neisseria menigitidis is gram (-) not (+) all gram (-) have endotoxins.
Why are gram positive bacteria more heat resistant than gram negative bacteria?
Gram positive bacteria contain more peptidoglycan than gram negative bacteria which is the substance responsible for the increased strength of gram positive bacterias cell walls therefore making them more resistant to heat. Gram negative do contain peptidoglycan but much, much less
Is mycolic acid found in gram positive and gram negative cell wall composition?
mycobacterium
What is the arrangement of echoli cell under gram stain?
e. coli stains Gram negative.
What is the poison that is released from the outer membrane of dead Gram-negative bacteria called?
==Answers== Endotoxins are toxins released when a cell lyses.
Does neisseria meningitidis have exotoxins and endotoxins?
Neisseria menigitidis is gram (-) not (+) all gram (-) have endotoxins.
Why are gram positive bacteria more heat resistant than gram negative bacteria?
Gram positive bacteria contain more peptidoglycan than gram negative bacteria which is the substance responsible for the increased strength of gram positive bacterias cell walls therefore making them more resistant to heat. Gram negative do contain peptidoglycan but much, much less
Is there periplasmic space in both gram positive and gram negative?
The periplasm is a region in the cell wall of Gram-negative bacteria
Name the different gram positive and gram negative bacteria?
Name of gram positive and gram negative bacteria?
Is proteus hauseri gram positive or gram negative?
A Gram negative pathogen. This means it has two thinner petidoglycan cell walls.
Are polymers gram negative?
A gram stain tests the contents of the cell wall. Polymers do not have cell walls.
What is gram negative bactria?
Christian Gram divided the bacteria into 2 types basing on the cell wall composition-Gram negative bacteria and Gram positive bacteria. Gram negative bacteria have low content of peptidoglycan in their cell wall and high content of lipopolysaccharides.Gram negative bacteria have the outermembrane.Outermembrane can be divided into 3 parts--lipidA,O side chains and Lipoproteins. Lipid A is responsible for endotoxins[the pathogenecity of Gram negative bacteria is due to lipid A O side chains are the O antigens [the antibodies of the host recognizes the bacteria with the help of O antigens. Lipopolysaccharides--present in much higher levels in gram negative bacteria than in gram positive bacteria.The lipoproteins are attached to the polysaccharide backboneand these are called as Braun's lipoproteins. The outer membrane is more permeable than the plasmamembrane and this nature comes from porins,which help in the transport of fluids. Examples of Gram negative bacteria include:E.coli,Pseudomonas,Salmonella etc
Are human cells gram positive?
Human cells are Gram-negative because they do not contain certain structures. More simply, if they don't have a cell wall they cannot be Gram-positive.
Why is chlamydia gram negative?
it explains its added resistance. it is gram negative due to it's enhanced cell wall, etc.
Is mycolic acid found in gram positive and gram negative cell wall composition?
mycobacterium
What is the arrangement of echoli cell under gram stain?
e. coli stains Gram negative.
