Which of the following is NOT a function of proteins?

Proteins play a crucial role in many biological processes, but energizing cellular processes is not typically one of their direct functions. Instead, proteins are involved in a wide range of functions including catalyzing biochemical reactions through enzymes, providing structural support to cells and tissues, and transporting molecules across membranes as part of various transport proteins or channels.

Energizing cellular processes is more closely associated with molecules like adenosine triphosphate (ATP), which is the primary energy currency of the cell. While proteins can facilitate processes that require energy, such as muscle contraction or active transport, they do not directly provide the energy themselves. Instead, they act to utilize the energy stored in ATP or other molecules to perform their roles.