what is a rough endoplasmic reticulum
Rough endoplasmic reticulum is a cell organelle that helps in protein synthesis as well as packaging of materials into lysosomes and secretory activities of cell.ough endoplasmic reticulum is so called because its outer surface  is studded with ribosomes. These ribosomes serve as the sites for  the translation of RNA into proteins. â¦ The primary function of the  rough endoplasmic reticulum is protein synthesis.