Final answer:
Among the options provided, 'information storage' is not a function of cell membranes. Cell membranes regulate transport, facilitate cell-cell communication, define boundaries, and provide sites for biochemical functions, but do not store genetic information. The correct answer is option 4.
Step-by-step explanation:
The functions of cell membranes are diverse and crucial for the maintenance and regulation of cellular homeostasis. Membranes serve important roles such as regulation of transport, cell-cell communication, and defining cell and organelle boundaries. These functions allow the cell to interact with its environment, exchange materials, signal other cells, and maintain the proper functioning of its internal components.
Another key function is providing sites for specific biochemical functions, like hosting enzymes that catalyze vital reactions within the cell. However, among the listed options in the question, information storage is not a function performed by cellular membranes.
Genetic information storage is primarily the role of nucleic acids like DNA and RNA within the cell nucleus and other organelles such as mitochondria and chloroplasts. Therefore, the correct option that does not represent a function of cell membranes is information storage.