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It is a type of organelle made up of two subunits – rough endoplasmic reticulum (RER), and smooth endoplasmic reticulum (SER). The endoplasmic reticulum is found in most eukaryotic cells and forms an interconnected network of flattened, membrane-enclosed sacs known as cisternae (in the RER), and tubular structures in the SER.
redid the whole smooth endoplasmic reticulum and the golgi aparatus. adedmore clear ribosomes. arranged centrioles in a centrosome with microtubula. aactin filaments and intermediate filaments. may still have to arrange text. 19:58, 5 September 2011: 553 × 404 (182 KB) LadyofHats
Secretory pathway diagram, including nucleus, endoplasmic reticulum and golgi apparatus. Nuclear membrane; Nuclear pore; Rough endoplasmic reticulum (rER) Smooth endoplasmic reticulum (sER) Ribosome attached to rER; Macromolecules; Transport vesicles; Golgi apparatus; Cis face of Golgi apparatus; Trans face of Golgi apparatus; Cisternae of ...
translation and folding of new proteins (rough endoplasmic reticulum), expression of lipids (smooth endoplasmic reticulum) single-membrane compartment: all eukaryotes: rough endoplasmic reticulum is covered with ribosomes (which are bound to the ribosome membrane), has folds that are flat sacs; smooth endoplasmic reticulum has folds that are ...
changed the smooth endoplasmic reticulum to look as a part of the rough ER. made ribosome smaller and more attached to the rough endoplasmic reticulum; made small membrane vesicles smaller and yellow. changed Golgi vesicles to Golgi body and added the actual Golgi vesicles. grouped elements that belonged together. made the file an SVG
Association and maturation of rRNA and r-proteins result in the formation of the 40S (small) and 60S (large) subunits of the complete ribosome. These are exported through the nuclear pore complexes to the cytoplasm, where they remain free or become associated with the endoplasmic reticulum, forming the rough endoplasmic reticulum (RER). [20] [21]
The rough endoplasmic reticulum is so named because the cytoplasmic surface is covered with ribosomes, giving it a bumpy appearance when viewed through an electron microscope. The smooth ER appears smooth since its cytoplasmic surface lacks ribosomes. [27]
Rough (containing ribosomes) and smooth (without ribosomes) microsomes are made from the endoplasmic reticulum through cell disruption. These microsomes have an inside that is exactly the same as the endoplasmic reticulum lumen. Both forms of microsomes can be purified by a process known as equilibrium density centrifugation. Rough and smooth ...