Question

Bacterial cells have a chemically complex cell envelope. The cell envelope consists of a tightly bound three-layer structure, i.e., the

• A. Outermost cell wall followed by the plasma membrane and then the glycocalyx
• B. Outermost cell wall followed by the glycocalyx and then the plasma membrane
• C. Outermost glycocalyx followed by plasma membrane and the cell wall
• D. Outermost glycocalyx followed by the cell wall and then the plasma membrane

Answer 1

The correct option is D

Outermost glycocalyx followed by the cell wall and then the plasma membrane

Parts of the bacterial cell envelope

$\bullet$ Outermost glycocalyx composed of carbohydrates, proteins and lipids, helps in protecting the cell from phagocytosis.
$\bullet$ Middle cell wall made up of peptidoglycans.

$\bullet$ Innermost cell or plasma membrane made up of a bilayer of phospholipids.

Final answer

$\left(D\right)$ Outermost glycocalyx followed by the cell wall and then the plasma membrane