Endoplasmic Reticulum & Ribosomes By: T’keyah Jonathan Maria Endoplasmic Reticulum Ribosomes The endoplasmic reticulum is a eukaryotic organelle that forms an interconnected network of tubules and vesicles within cells. These structures are responsible for several specialized functions: protein translation and the folding and transport of proteins to be used in the cell membrane. Endoplasmic Reticulum Ribosomes The surface of the rough endoplasmic reticulum is studded with proteinmanufacturing ribosomes giving it a "rough" appearance. The RER is not always studded with these ribosomes, however initially, the RER appears smooth due to a lack of resident ribosomes. Endoplasmic Reticulum Ribosome’s Ribosomes transport to the cytoplasm through the nuclear envelope. Ribosomes are not bound by a membrane and they are simple structures made of RNA and protein. Ribosomes help to make proteins that perform tasks within the cytoplasm itself. Endoplasmic Reticulum This is a picture of the endoplasmic reticulum. It also shows the rough endoplasmic reticulum and the smooth endoplasmic reticulum. Ribosomes This is a picture of ribosomes in a cell. It shows the nuclear envelope, the nuclear pore, the Golgi apparatus and many other things. Sources www.google.com www.wikipedia.org www.cellbio.edu