Which term refers to proteins that provide structure in tissues such as muscle and bone?

The term that refers to proteins providing structure in tissues such as muscle and bone is structural proteins. These proteins play a critical role in maintaining the shape, integrity, and strength of cells and tissues. For instance, collagen is a prominent structural protein found in connective tissues, including bones, tendons, and cartilage, which provides support and resistance to stretching. Similarly, actin and myosin are structural proteins in muscle tissue that are essential for contraction and movement.

Other types of proteins mentioned, such as functional, enzymatic, and transport proteins, fulfill different roles. Functional proteins generally refer to proteins that have specific physiological functions, enzymatic proteins catalyze biochemical reactions, and transport proteins are involved in moving substances across cell membranes or within the bloodstream. None of these categories specifically relate to the structural support provided by proteins like collagen or muscle fibers.