Question

what cell structure is a rigid layer that surrounds the cell membrane of some cells?
a cytoskeleton
b lipid bilayer
c cell wall
d centriole

Explanation:

• Cytoskeleton: It provides structural support within the cell but is not a layer surrounding the cell membrane.
• Lipid bilayer: It is the main component of the cell membrane itself, not a layer surrounding it.
• Cell wall: In plant cells, fungi, and some bacteria, the cell wall is a rigid layer that surrounds the cell membrane. It provides protection and support.
• Centriole: Involved in cell division (in animal cells), has no relation to being a layer around the cell membrane.

Answer:

C. Cell wall