Question

which feature is shared by plant and bacterial cell walls?
they both protect the cell and provide structure.
they are both made of the same material.
they both allow cells to move.

Explanation:

• For the option "They are both made of the same material": Plant cell walls are mainly made of cellulose, while bacterial cell walls are mainly made of peptidoglycan, so this is incorrect.
• For the option "They both allow cells to move": Cell walls are rigid structures that do not facilitate cell movement; they provide support and protection, so this is incorrect.
• For the option "They both protect the cell and provide structure": Both plant and bacterial cell walls serve to protect the cell from external factors and give the cell structural support, which is a shared function.

Answer:

They both protect the cell and provide structure.