Final answer:
Energy storage is not a role of carbohydrates in the extracellular matrix; this is an intracellular process. The extracellular matrix is involved in structural support, cell recognition, and cell movement.
Step-by-step explanation:
The extracellular matrix is a network of carbohydrates and proteins that provides structural and biochemical support to the surrounding cells. Among the roles of carbohydrates in the extracellular matrix are:
- Structural support: Carbohydrates, along with proteins like collagen, contribute to the physical structure and stability of tissues.
- Cell recognition: Carbohydrates on the cell surface act as identity markers aiding in cell-to-cell communication and interactions.
- Cell movement: The extracellular matrix composed of carbohydrates and proteins facilitates the movement and migration of cells during development and wound healing.
Carbohydrates also contribute to the formation of the glycocalyx, which plays a crucial role in normal development and in preventing cancer metastasis. However, energy storage is not a role of carbohydrates in the extracellular matrix. Instead, carbohydrates like glucose are broken down within the cell to produce ATP for energy. Energy storage in the form of starch and glycogen is an intracellular process where they are amassed for later energy release.
Therefore, the answer to the student's question is that energy storage (option b) is not a role of carbohydrates in the extracellular matrix.