Rough endoplasmic reticulum – A section of the endoplasmic reticulum on with the protein manufacturing organelle i.e. ribosomes are attached is termed as rough endoplasmic reticulum which give it a "rough" appearance (hence its name).[5] Its primary function is the synthesis of enzymes and other proteins. Vesicle – A relatively small intracellular, membrane-enclosed sac that stores or transports substances . Golgi apparatus – A eukaryotic organelle that processes and packages macromolecules such as proteins and lipids that are synthesized by the cell.