Final answer:
The endomembrane system includes the nucleus, endoplasmic reticulum, Golgi apparatus, lysosomes, vesicles, and the plasma membrane. These components work together to modify, package, tag, and transport proteins and lipids within the cell. Ribosomes are essential in all cells, even prokaryotic cells, for protein synthesis.
Step-by-step explanation:
The endomembrane system includes the nuclear envelope, endoplasmic reticulum, Golgi apparatus, lysosomes, vesicles, and the plasma membrane. These components work together to modify, package, tag, and transport proteins and lipids within the cell. For example, the rough endoplasmic reticulum (RER) with its attached ribosomes is responsible for protein synthesis, while the Golgi apparatus modifies and packages the proteins before they are transported to their proper destinations. The mitochondria are referred to as the power plants of the cell because they are responsible for producing energy needed for various cellular processes. Vesicles and vacuoles play roles in transporting and storing substances within the cell. Lastly, ribosomes are essential in all cells, even prokaryotic cells, for protein synthesis.