Explanation:

- Mitochondria are known as the powerhouse of the cell. They generate energy by converting glucose and oxygen into ATP, the energy currency of the cell.

- The Endoplasmic Reticulum (ER) is involved in protein and lipid synthesis. It comes in two types: smooth and rough ER.

- The Nucleus acts as the control center of the cell. It contains the cell’s genetic material and regulates gene expression.

- The Cytoplasm is the jelly-like substance inside the cell. It holds organelles in place and allows for the movement of materials.