What three organelles help a cell?

Three key organelles that help a cell are the mitochondria, endoplasmic reticulum (ER), and Golgi apparatus. Mitochondria are responsible for energy production through cellular respiration, providing ATP for cellular functions. The endoplasmic reticulum assists in the synthesis and processing of proteins and lipids, while the Golgi apparatus modifies, sorts, and packages these molecules for transport to their destinations within or outside the cell. Together, these organelles play crucial roles in maintaining cellular health and function.