0
The Gram positive bacterial cell wall is made up of thick peptidoglycan layer which is rich in Teichoic acids. These teichoic acids are negatively charged because of presence of phosphate in their structure.
The Gram negative bacteria have an outer membrane composed of phospholipids and Lipopolysaccharides. The lipopolysaccharides impart a strongly negative charge to surface of Gram negative bacterial cells.
What else can I help you with?
Why does nigrosin not stain bacterial cells?
Nigrosin is an acidic stain composed of large molecules that are repelled by the negatively charged bacterial cell surface. Bacterial cells typically have a negative charge due to components like lipopolysaccharides in their cell walls, which repel the negatively charged nigrosin dye, preventing it from staining the cells.
What is a bacterial genus that has waxy mycolic acid in the cell walls?
Mycobacterium is a bacterial genus that has waxy mycolic acid in the cell walls. This acid helps make the cell walls impermeable to many substances, contributing to the resistance of the bacterial cells.
Is there any similarity between bacterial cell wall and plant cell wall?
No, there is no similarity in bacterial cell walls and plant cell walls. They are different morphologically and also in chemical composition; plant cell walls are made up of cellulose, whereas bacterial cell walls are made up of peptidoglycan (also known as murein).
Do gram negative bacteria have peptidoglycan in their cell walls?
No, gram-negative bacteria do not have peptidoglycan in their cell walls.
What is the difference between acidic dye and basic dye?
basic dyes are more effective for bacterial staining than acidic dyes because basic dyes have a positive charged chromogen. Bacterial nucleic acids and certain cell wall components carry a negative charge that strongly binds to the cationic chromogen.
Why does nigrosin not stain bacterial cells?
Nigrosin is an acidic stain composed of large molecules that are repelled by the negatively charged bacterial cell surface. Bacterial cells typically have a negative charge due to components like lipopolysaccharides in their cell walls, which repel the negatively charged nigrosin dye, preventing it from staining the cells.
Why are basic stains attracted to the bacteria itself?
The bacterial cell wall has a negative charge. The basic stain has a positive charge. Since they have opposite charges, the bacterial cell wall and the basic stain are attracted to each other; hence the basic stain dyes the bacteria.
Could a negatively charged dye stain a bacteria?
The effect on the bacteria depends if the stain is an acidic or basic stain. Most bacteria are stained when a basic stain permeates the cell wall and adheres by weak ionic bonds to the bacterial cell, which is slightly negatively charged.
Is a wall negatively charged?
Not necessarily. The charge of a wall depends on various factors such as the materials it is made of and the environment it is in. Walls can have a neutral charge, a positive charge, or a negative charge depending on the circumstances.
Do bacterial plant and animal cells have walls?
only plant and bacterial cells have walls
When you rub a balloon on your head what kind of charge is created?
When you rub a balloon on your head, electrons are transferred from your hair to the balloon, giving the balloon a negative charge. This negative charge creates static electricity, which causes the balloon to stick to surfaces like walls or hair due to the attraction between the positive and negative charges.
What is a bacterial genus that has waxy mycolic acid in the cell walls?
Mycobacterium is a bacterial genus that has waxy mycolic acid in the cell walls. This acid helps make the cell walls impermeable to many substances, contributing to the resistance of the bacterial cells.
Is there any similarity between bacterial cell wall and plant cell wall?
No, there is no similarity in bacterial cell walls and plant cell walls. They are different morphologically and also in chemical composition; plant cell walls are made up of cellulose, whereas bacterial cell walls are made up of peptidoglycan (also known as murein).
What charge does a wall have?
Walls themselves do not have a specific electric charge; they are typically neutral, meaning they have an equal number of protons and electrons. However, walls can become charged due to various factors, such as friction or contact with charged objects, leading to a temporary positive or negative charge. This charge can affect nearby objects and influence static electricity phenomena.
Soap can dissolve the outer walls of bacterial?
cells
Does bacterial wall contain chitin?
As far as I'm aware - no. Chitin is present in the cell walls of funghi but I believe bacterial cell walls are mostly made of proteoglycans.
What type of charge do most simple stain dyes have?
Most simple stain dyes have a positive charge. This positive charge allows them to bind effectively to the negatively charged components of bacterial cell walls and cellular structures, making them useful for highlighting cells under a microscope. This characteristic is especially important in techniques like the Gram stain, where the differential binding helps in identifying bacterial types.
