Here's why:
* Structure: The cytoskeleton is a network of protein filaments that extend throughout the cytoplasm. It acts like a scaffolding system, giving the cell its shape and helping it maintain its structure.
* Movement: The cytoskeleton also plays a role in cell movement, helping cells move around, change shape, and transport materials within the cell.
* Organization: It helps organize the cell's internal components and anchors organelles in their correct positions.
While the cell wall provides support for plant cells, animal cells lack this rigid structure. The cytoskeleton is their primary means of structural support.