* Mitochondria are often referred to as the "powerhouses" of the cell. They are responsible for producing energy (ATP) through cellular respiration. Crucially, mitochondria have their own DNA, separate from the cell's nuclear DNA. This is a remnant of their evolutionary history as independent bacteria that were incorporated into eukaryotic cells.

Let's look at the other options:

* Golgi apparatus: This organelle processes and packages proteins and lipids. It does not have its own DNA.

* Endoplasmic reticulum: This network of membranes is involved in protein synthesis, lipid metabolism, and detoxification. It does not have its own DNA.

* Lysosomes: These are cellular "recycling centers" that break down waste materials. They do not have their own DNA.

Let me know if you have any other questions!