Question

what is one main difference between the cell wall and the cell membrane?
a. cell walls are only found surrounding animal cells.
b. cell membranes are only found surrounding plant cells.
c. the cell wall is more fragile than the cell membrane.
d. the cell wall is more rigid than the cell membrane.

Explanation:

• Option A: Cell walls are found in plant, fungal, and bacterial cells, not animal cells, so A is incorrect.
• Option B: Cell membranes are found in all cells (animal, plant, prokaryotic), so B is incorrect.
• Option C: Cell walls are not only in plant cells (e.g., fungi, bacteria also have cell walls), so C is incorrect.
• Option D: The cell wall (e.g., in plants, made of cellulose) is more rigid, providing structural support, while the cell membrane is flexible. So D is correct.

Answer:

D. The cell wall is more rigid than the cell membrane.