Which of the following is not a function of the cell membrane?

The cell membrane serves several crucial roles in maintaining the health and functionality of a cell. One of its primary functions is to provide structure and support to the cell, helping to hold its shape. Additionally, it plays a vital role in regulating the movement of substances in and out of the cell, allowing essential nutrients to enter and waste products to exit. The cell membrane also acts as a barrier, protecting the internal components of the cell from the external environment.

Storing energy, however, is not among the functions of the cell membrane. Energy storage is primarily the role of organelles such as mitochondria and to some extent, vacuoles in plants, which can store various substances, including energy-rich compounds. The focus of the cell membrane is on maintaining homeostasis and facilitating communication between the cell and its environment, rather than energy storage.