14 Questions
Which type of cell wall is more complex, according to the text?
Gram negative
What is the outer membrane of a Gram negative cell wall composed of?
Lipids, lipoproteins, and lipopolysaccharide (LPS)
What is absent in the Gram negative cell wall?
Teichoic acids
What is the main component of the Gram positive cell wall?
Peptidoglycan
What contributes to the negative charge on the cell surface?
Core polysaccharide
Which component of LPS may act as an endotoxin?
Lipid A
What is more permeable than the plasma membrane due to the presence of porin proteins and transporter proteins?
Outer membrane
Which type of cells may survive in isotonic environments as they do not produce a cell wall?
Mycoplasma
What is the main function of the glycocalyx in the cell envelope?
Provide protection from desiccation
How are capsules different from slime layers?
Capsules are well-organized and visible in a light microscope, while slime layers are not
In which type of bacteria is the S layer associated with the peptidoglycan surface?
Gram-positive bacteria
What is a potential use of the S layer in bacteria?
Use in nanotechnology
Which component of the cell envelope protects the cell from predation?
S layer
What advantage do capsules provide to bacteria?
Protection from desiccation
Learn about the structure of Gram negative cell walls, which consist of a thin layer of peptidoglycan surrounded by an outer membrane composed of lipids, lipoproteins, and lipopolysaccharide (LPS). They do not contain teichoic acids.
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