* Lack of Cell Walls: Unlike plant cells, animal cells don't have rigid cell walls. This allows them to change shape and move around.
* Cytoskeleton: Animal cells have a network of protein fibers called the cytoskeleton that provides structural support and allows for movement and changes in cell shape.
* Fluid-Filled Interior: The interior of an animal cell is filled with cytoplasm, a fluid that allows for flexibility.
However, animal cells do have a defined shape:
* Organelles: The organelles within the cell, like the nucleus and mitochondria, contribute to the cell's overall form.
* Cell Membrane: The cell membrane acts as a barrier and helps maintain a specific shape, though it is still flexible.
Therefore, animal cells are flexible, but they are not fixed in shape. Their shape can change based on their function and environment.