Which component is responsible for structural support in cells?

The component responsible for structural support in cells is the cytoskeleton. It is a dynamic network of protein filaments and tubules that provides shape, strength, and mobility to the cell. The cytoskeleton plays several critical roles, including maintaining the cell’s shape, assisting in cellular movement, and facilitating the transport of materials within the cell.

It consists of three main types of fibers: microfilaments, intermediate filaments, and microtubules, each contributing to the overall function and stability of the cell. This structure not only supports the cell but also plays an essential role in processes such as cell division and the movement of vesicles.

In contrast, the cell membrane serves to protect the cell and regulate the entry and exit of substances but does not provide internal structural support. Ribosomes are responsible for protein synthesis, and the nucleus contains genetic material and regulates gene expression, neither of which are directly involved in providing structural support.