Provide your best answer for the following question. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The question is: In eukaryotic organisms, interaction between which organelles is most important for cell shape, tensile strength, and communication between cells?
cytoskeleton and cell membrane
Plasma membrane and cell wall (in plant cells) or plasma membrane and cytoskeleton (in animal cells).