Answer:
Mitochondria
Explanation:
Cells are the part of the body that are self-sustaining. The human body has about 1 trillion cells. Each cell that the body has includes a number of organelles and each organelle has a unique function. Some of those functions including forming proteins, being apart of DNA synthesis. Mitochondria is important because it helps reproduce energy in the cell. Mitochondria can be found in both animal and plant cells.