What happens inside the endoplasmic reticulum?

Ribosomes present on the surface of endoplasmic reticulum are delivering proteins directly inside lumen of ER. Vesicles from ER fuse with Golgi complex and deliver the proteins in the lumen of Golgi vesicles. In the Golgi, proteins are modified, packed and delivered to two different type of vesicles. read more

Rough E.R(Endoplasmic reticulum) serves as the special chamber for synthesising proteins. By the the help of ribosomes-containing-mrna, these small bounded-organelles enter the chamber where they release mrna that contains proteins. read more

The endoplasmic reticulum occurs in most types of eukaryotic cells, but is absent from red blood cells and spermatozoa. There are two types of endoplasmic reticulum: rough (granular) and smooth (agranular). The outer face of the rough endoplasmic reticulum is studded with ribosomes that are the sites of protein synthesis. read more

Endoplasmic reticulum (ER), in biology, a continuous membrane system that forms a series of flattened sacs within the cytoplasm of eukaryotic cells and serves multiple functions, being important particularly in the synthesis, folding, modification, and transport of proteins. read more