What function does a lysosome serve in the cell?

A lysosome serves as the cell's waste disposal system, playing a crucial role in breaking down various biomolecules, including proteins and certain carbohydrates. It contains digestive enzymes that are responsible for degrading old or dysfunctional cellular components—a process known as autophagy—as well as materials from outside the cell, such as nutrients or pathogens that have been engulfed. Through the action of these enzymes, lysosomes help maintain cellular homeostasis by recycling cellular components, which is essential for cell health and function.

The other functions listed do not pertain to lysosomes. Storing genetic material is the function of the nucleus, while energy production occurs primarily in the mitochondria. The process of cell division is carried out with the help of various structures like the mitotic spindle, centrioles, and other components, but not by lysosomes. Thus, the role of lysosomes is distinctly focused on the breakdown and recycling of biomolecules, making the correct answer clear.