Definition of dissatisfaction noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
SUMMARY. 1  Endoplasmic reticulum is an organelle found in both eukaryotic animal and plant cells. 2  The rough ER, studded with millions of membrane bound ribosomes, is involved with the production, folding, quality control and despatch of some proteins.
The endoplasmic reticulum is composed of sac-like structures called cisternae that are folded and bound together by a cytoskeleton. There are two types of endoplasmic reticulum: smooth endoplasmic reticulum and rough endoplasmic reticulum.Smooth endoplasmic reticulum gets its name from its smooth folded surface.efinition of Endoplasmic Reticulum. Cells have many organelles that work together to help them complete their life functions. One of those organelles is the endoplasmic reticulum, which is an interconnected network of membrane vesicles, or small containers used by cells to transport or hold materials.