Which option is not a described function of protein?

• A. Cell production, tissue growth and repair, enzymes-hormones-and-antibody production, and provides energy.
• B. Transmission of neural impulses
• C. Storage of carbohydrates
• D. Regulation of body temperature

Answer: (B)

Proteins have many established roles: they help build and repair tissues, act as enzymes to drive chemical reactions, function as hormones and antibodies, and can supply energy when other sources are limited. The transmission of neural impulses, however, is a function of the nervous system’s cells and electrical signaling, not a primary role of proteins themselves. While proteins like ion channels and receptors participate in neural signaling, that signaling capability is a property of neurons and their systems, not a standalone protein function.

Storing carbohydrates is the job of glycogen stores, mainly in liver and muscle, not proteins, and regulating body temperature is governed by the body's thermoregulatory mechanisms, not a direct protein function. So the statement that describes transmission of neural impulses does not fit as a primary protein function.