Final answer:
The endoplasmic reticulum is responsible for the synthesis of new membrane for components of the endomembrane system.
Step-by-step explanation:
The endoplasmic reticulum is responsible for the synthesis of new membrane for components of the endomembrane system. It is a network of membranous tubules and sacs that extends throughout the cytoplasm of eukaryotic cells. The rough endoplasmic reticulum (ER) is studded with ribosomes and is involved in protein synthesis, while the smooth ER is involved in lipid synthesis and detoxification.