The key difference between granular and agranular endoplasmic reticulum is that granular endoplasmic reticulum has ribosomes over the surface while agranular endoplasmic reticulum does not have ribosomes over the surface. Endoplasmic reticulum (ER) is a series of flattened sacs and a network of tubules present in the cytoplasm of eukaryotic cells.  ER is an important organelle […]