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

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

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Correct answer · Option D

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.