Correct option is C
The cell envelope consists of three layers that surround the prokaryotic cell, particularly in bacteria. These layers include:
- Glycocalyx: The outermost layer, which can be a slime layer or a capsule. It aids in protection, adhesion, and evasion from the immune system.
- Cell Wall: The middle layer, providing shape and structural support. It is made of peptidoglycan in most bacteria.
- Plasma Membrane: The innermost layer, composed of a phospholipid bilayer, it regulates the movement of substances into and out of the cell.
Additional Information:
- The cell envelope structure varies between Gram-positive and Gram-negative bacteria:
- Gram-positive bacteria: Have a thick peptidoglycan layer and no outer membrane.
- Gram-negative bacteria: Have a thin peptidoglycan layer and an additional outer membrane.
