What is not a function of the cell membrane?

The cell membrane primarily serves to control what enters and exits the cell, providing a selective barrier that helps maintain the internal environment of the cell. This function is crucial for nutrient uptake, waste removal, and maintaining homeostasis. Additionally, the cell membrane contributes to regulating communication within and between cells through various surface proteins that can receive and transmit signals.

While the cell membrane does play a role in maintaining cell structure and facilitating communication, it does not store genetic material. Genetic material, such as DNA, is primarily located within the nucleus of eukaryotic cells or in the nucleoid region of prokaryotic cells. Thus, stating that storing genetic material is a function of the cell membrane is incorrect, as this role specifically belongs to the nucleus in eukaryotic cells or the chromosomal DNA in prokaryotes.