Which of the following statements about the bacterial cell envelope is correct?

The cell envelope consists of two loosely bound layers that function independently without protection
Gram-negative bacteria retain the crystal violet stain due to a thick outermost peptidoglycan coat
The plasma membrane is structurally completely different from eukaryotic plasma membrane
A thick and tough glycocalyx is called capsule, whereas a loose sheath form is called slime layer

Correct answer · Option 4

A thick and tough glycocalyx is called capsule, whereas a loose sheath form is called slime layer

Glycocalyx varies in thickness: a loose sheath is a slime layer, while a thick and tough layer is termed a capsule.