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What is the difference between cell wall of gram positive and gram negative bacteria.?
Wiki User
∙ 9y ago
Gram positive bacteria cell walls have a thick layer of Peptidoglycan and no periplasmic space.
Gram negative bacteria cell walls have inner and outter cytoplasmic membranes with a periplasmic space in between. these also have a thin layer of Peptidoglycan.
The outter cytoplasmic membrane of gram negative bacteria contains lipopolysaccharides.
Wiki User
∙ 15y ago
Wiki User
∙ 15y agoGram positive bacteria cell wall is composed of a thick peptidoglycan layer. Gram negative bacteria cell wall is composed of a thin peptidoglycan layer and an outer membrane made of lipopolysaccharide (LPS). Plant cell walls, however, are made of cellulose.
Wiki User
∙ 13y agothey are toxic to humans
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What cell structure is significantly different between gram-positive and gram-negative bacteria?
The difference between a gram positive and gram negative bacteria is the thickness/presence of the peptidoglycan layer secreted on the outside of the plasma membrane
What is the difference between positive gram and negative gram?
The major difference between gram positive and the gram negative bacteria is the structure of their cell wall. The gram positive bacteria have two layers a plasma membrane and outer to it a peptidoglycan layer. But the gram negative bacteria have another layer other than the cell wall. While the gram negative bacteria has three layers. It has a plasma membrane that is called as the inner membrane, then a peptidoglycan layer and finally an outer membrane of phospholipids and lipopolysaccharides. There is space between the inner membrane and the peptidoglycan layer called as the periplasmic space. Peptidoclycan layer in the gram positive bacteria are much more thicker than that of the gram negative bacteria. The molecule teichoic acid is present in gram positive bacteria and the porin proteins are characteristically present in the gram negative bacteria. Gram positive bacteria usually produce exotoxins and the gram negative bacteria usually produces endotoxins. Gram positive bacteria gives Violet colour to the gram staining and the gram negative bacteria gives pink colour to the gram staining. In gram staining the bacteria is fixed on slides and then they are treated with Crystal Violet. After that they are treated with iodine and then they are decolourised. If the bacteria is gram negative then it shows Violet colour and if it is gram negative then it shows pink colour. Initially both strains show Violet colour after Crystal Violet treatment but on the treatment with iodine and decolourisation the gram negative bacteria loose colour and become pink. This is because in the gram positive bacteria the Violet crystals bind firmly to the peptidoglycan layer and the colour is not removed in later stages. In gram positive bacteria the colour does not penetrate much because of outer membrane and is lost much during decolourisation.
What is the difference between negative and positive feedback in human?
we grow up with the learning of the fact that there is a difference between Positive and Negative feedback. it is obvious that negative is bad because of the the latin root "neg" meaning to feel sorrow. while positive is good because it uses the greek root "pos" meaning to be in a place of high power
Can treatment with Transpeptidase eliminate gram positive bacteria from a mixture of gram positive bacteria and gram negative bacteria?
No. A treatment of ethylenediaminetetraacetic acid (EDTA) and the enzyme, lysozyme, will cause gram negative bacteria to lyse. Some gram positive bacteria can also be lysed by doing this. The EDTA stabilizes the solution and allows lysozyme to cut the bonds between the carbohydrates that make up the cell wall wall in bacteria. This will lyse the cell and cause the contents of the cell to be spilled out. This technique is primarily used for DNA assays. A good way to isolate either gram positive or gram negative is by using different types of agar. The MacConkey agarmight be the most useful for what you want to do. It will only allow gram negative to grow, isolating just the gram negatives only.
The electrical charge resulting from the difference between the positive and negative ions outside and?
The resting membrane potential
What is the difference between the gram-positive bacteria and gram-negative bacteria?
They have different cell walls.
What cell structures is significantly different between Gram positive and Gram-negative bacteria?
The difference between a gram positive and gram negative bacteria is the thickness/presence of the peptidoglycan layer secreted on the outside of the plasma membrane
What cell structure is significantly different between gram-positive and gram-negative bacteria?
The difference between a gram positive and gram negative bacteria is the thickness/presence of the peptidoglycan layer secreted on the outside of the plasma membrane
What are the similarities between routine and positive messages?
What is the similarities between routine and positive messages? What is the similarities between routine and negative messages? What is the similarities of routine and persuasive messages? What is the similarties between positive and negative messages? What is the similarities positive and pursusive messages? What is the difference between routine and positive messages? What is the difference between routine and negative messages? What is the difference between positive and negative messages? What is the difference between positive andpersuasive messages? What is the similarities between routine and positive messages? What is the similarities between routine and negative messages? What is the similarities of routine and persuasive messages? What is the similarties between positive and negative messages? What is the similarities positive and pursusive messages? What is the difference between routine and positive messages? What is the difference between routine and negative messages? What is the difference between positive and negative messages? What is the difference between positive andpersuasive messages? What is the similarities between routine and positive messages? What is the similarities between routine and negative messages? What is the similarities of routine and persuasive messages? What is the similarties between positive and negative messages? What is the similarities positive and pursusive messages? What is the difference between routine and positive messages? What is the difference between routine and negative messages? What is the difference between positive and negative messages? What is the difference between positive andpersuasive messages?
What are the Difference between positive and negative development?
one is positive, the other is negative
What is the difference between a negative and a positive?
positive ions carry positive charge and negative ions carry negative charge
What is the difference between positive and negative momentum?
The difference between positive and negative momentum is the direction that the object is going. Left and down are negative, right and up are positive. For example: if a ball is rolling to the left, it has a negative momentum.
What are difference between negative and positive signs?
Positive looks like this + Negative looks like this -
What is the difference between positve and negative correlation?
Positive correlation has a positive slope and negative correlation has a negative slope.
What is the difference between negative and positive?
Each of them is the negative of the other one.
What is the difference between positive and negative comparator?
positive yhe porlar
Is the difference of a positive integer and a negative integer always positive?
The difference between any numbers is always positive.
