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.
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.
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.
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).
No, gram-negative bacteria do not have peptidoglycan in their cell walls.
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.
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.
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.
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.
only plant and bacterial cells have walls
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, 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.
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.
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).
cells
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.
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.
No, gram-negative bacteria do not have peptidoglycan in their cell walls.