The cytoskeleton is a network of protein filaments that provide structural support, help maintain cell shape, facilitate movement, and transport materials within the cell. It's a dynamic structure that can be constantly remodeled to meet the needs of the cell.
Here are some key components of the animal cell cytoskeleton:
* Microtubules: Long, hollow tubes made of tubulin protein. They help with cell division, transport, and form the basis for cilia and flagella.
* Microfilaments: Thin, solid fibers made of actin protein. They are involved in cell movement, muscle contraction, and cell division.
* Intermediate filaments: Rope-like fibers made of various proteins. They provide structural support and help anchor organelles.
So, while animal cells lack cell walls, they have a well-developed cytoskeleton that plays a vital role in their function and survival.
