Which function is not associated with carbohydrates?

• A. Cell membrane components
• B. Energy source
• C. Intercellular communication
• D. Structural support

Answer: (C)

Intercellular communication is a function primarily associated with signaling molecules and receptors rather than carbohydrates themselves. While carbohydrates can participate in cell recognition processes through glycoproteins and glycolipids on cell surfaces, they are not the main players in direct intercellular communication. Instead, proteins and lipids are typically more directly involved in the signaling pathways and communication between cells.

Carbohydrates serve several important functions that are clear and well-defined. They are a primary energy source for the body, providing fuel for metabolic processes. In addition to energy storage, carbohydrates also play a crucial role in structural support, particularly in the cell walls of plants (cellulose) and the exoskeletons of some arthropods (chitin). Furthermore, carbohydrates are involved as components of cell membranes, forming glycoproteins and glycolipids that aid in communication and recognition between cells within a tissue.

This understanding helps clarify why intercellular communication is not primarily a function associated with carbohydrates, distinguishing it from the other roles carbohydrates fulfill in biological systems.