Which type of proteins found in cells provide structural support?

Structural proteins play a crucial role in providing support and shape to cells and tissues. These proteins form the cytoskeleton, which is essential for maintaining the integrity of cells, enabling them to withstand mechanical stress. Examples of structural proteins include collagen, which is found in connective tissues, and keratin, which is a key component of hair, nails, and the outer layer of skin.

Their primary function is to create a framework upon which cells and organs are constructed, thereby contributing to the overall architecture of biological systems. This support is vital for the proper functioning of tissues and organs, as it allows for organization and stability within the body, facilitating the coordinated movement and response of cells to their environment. In contrast, the other types of proteins, such as enzymatic, globular, and transport proteins, have distinct roles related to biochemical processes, signaling, and the movement of substances rather than providing structural support.