Final answer:
The cytoskeleton is a network of structural proteins within the cell that functions similarly to a human skeleton by providing shape, support, and facilitating cell movement and division.
Step-by-step explanation:
The cytoskeleton of a cell is analogous to a human skeleton in that it provides an internal framework that supports the structure of the cell, similar to how our skeleton maintains the shape of our body. Just as our bones give our bodies a sturdy shape and anchor our muscles, the cytoskeleton's network of microfilaments, intermediate filaments, and microtubules provides structure, aids in intracellular transport, and facilitates movement. It's not just about maintaining shape; the cytoskeleton is also integral to cell motility, division, and keeping cellular components in their correct locations within the cytoplasm. Like the frame of a house shown in Figure 5.5.2, the cytoskeleton gives cells rigidity and shape, with actin filaments and tubules making up its visible framework.