Final answer:
The endomembrane system is a group of membranes and organelles in eukaryotic cells that work together to modify, package, and transport lipids and proteins. It includes the nuclear envelope, lysosomes, vesicles, the endoplasmic reticulum (ER), and Golgi apparatus.
Step-by-step explanation:
The endomembrane system is a group of membranes and organelles in eukaryotic cells that work together to modify, package, and transport lipids and proteins. It includes the nuclear envelope, lysosomes, vesicles, the endoplasmic reticulum (ER), and Golgi apparatus.
The endoplasmic reticulum (ER) is a network of membranes involved in protein synthesis and lipid metabolism. It consists of rough ER, where ribosomes are attached and protein synthesis occurs, and smooth ER, which plays a role in lipid metabolism and detoxification.
The Golgi apparatus is responsible for modifying, packaging, and sorting proteins and lipids received from the ER. It consists of a series of flattened sacs called cisternae, and it has a cis face where vesicles from the ER fuse, and a trans face where vesicles bud off to their final destinations.