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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.
Bacterial cell walls carry a negative charge due to the presence of molecules like teichoic acids and lipopolysaccharides with negatively charged groups. This negative charge helps protect bacteria from certain environmental stresses and can facilitate interactions with other molecules or cells.
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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?
Yes, both bacterial cell walls and plant cell walls are composed of complex carbohydrates. However, the specific components and structures of the cell walls are different between bacteria and plants. Bacterial cell walls are primarily made of peptidoglycan, while plant cell walls are composed of cellulose, hemicellulose, and pectin.
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.
What part of bacterial cell is most involve with gram staining and why?
The cell wall of the bacterial cell is most involved in the gram staining process. This is because the cell wall composition differs between gram-positive and gram-negative bacteria, leading to differences in how they retain the crystal violet stain used in the gram staining procedure. Gram-positive bacteria have a thick peptidoglycan layer that retains the stain, while gram-negative bacteria have a thinner peptidoglycan layer and an outer membrane that does not retain the stain.
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?
Basic stains are attracted to bacteria because bacterial cell walls are negatively charged due to the presence of molecules like teichoic acids. Basic stains have a positive charge, which allows them to bind to the negatively charged bacterial cell walls through electrostatic interactions, resulting in the staining of the bacterial cells.
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.
Do bacterial plant and animal cells have walls?
only plant and bacterial cells have walls
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.
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?
Yes, both bacterial cell walls and plant cell walls are composed of complex carbohydrates. However, the specific components and structures of the cell walls are different between bacteria and plants. Bacterial cell walls are primarily made of peptidoglycan, while plant cell walls are composed of cellulose, hemicellulose, and pectin.
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.
Bacterial cell walls contain a unique substance called?
peptidoglycan. This substance provides structural support and protection to the bacterial cell by forming a mesh-like network around the cell membrane. Peptidoglycan is a key component of bacterial cell walls and is absent in the cell walls of other organisms, such as plants and animals.
Preparation made from killed bacteria or damaged particles from bacterial cell walls that can prevent some bacterial diseases?
Vaccine
