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.
There are two types of endoplasmic reticulum: rough endoplasmic reticulum (rough ER) and smooth endoplasmic reticulum (smooth ER). Both types are present in plant and animal cells.The two types of ER are separate entities and are not joined together.ELLS NEED THE ROUGH AND THE SMOOTH. Think of a cell as a âmultitude of membranesâ we said in an earlier section. This statement certainly applies to the endoplasmic reticulum an organelle found in eukaryotic cells. About 50% of the total membrane surface in an animal cell is provided by endoplasmic reticulum (ER).