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14 Questions

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Gram Negative Cell Walls Structure

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Questions and Answers

Which type of cell wall is more complex, according to the text?

Gram negative (correct)

Neither is more complex

Gram positive

Both are equally complex

What is the outer membrane of a Gram negative cell wall composed of?

Cellulose

Teichoic acids

Lipids, lipoproteins, and lipopolysaccharide (LPS) (correct)

Peptidoglycan

What is absent in the Gram negative cell wall?

Teichoic acids (correct)

Lipopolysaccharide (LPS)

Outer membrane

Peptidoglycan

What is the main component of the Gram positive cell wall?

Peptidoglycan Signup and view all the answers

What contributes to the negative charge on the cell surface?

Core polysaccharide Signup and view all the answers

Which component of LPS may act as an endotoxin?

Lipid A Signup and view all the answers

What is more permeable than the plasma membrane due to the presence of porin proteins and transporter proteins?

Outer membrane Signup and view all the answers

Which type of cells may survive in isotonic environments as they do not produce a cell wall?

Mycoplasma Signup and view all the answers

What is the main function of the glycocalyx in the cell envelope?

Provide protection from desiccation Signup and view all the answers

How are capsules different from slime layers?

Capsules are well-organized and visible in a light microscope, while slime layers are not Signup and view all the answers

In which type of bacteria is the S layer associated with the peptidoglycan surface?

Gram-positive bacteria Signup and view all the answers

What is a potential use of the S layer in bacteria?

Use in nanotechnology Signup and view all the answers

Which component of the cell envelope protects the cell from predation?

S layer Signup and view all the answers

What advantage do capsules provide to bacteria?

Protection from desiccation Signup and view all the answers