what are endoplasmic retticulum
Asked by rhea | 3rd May, 2012, 04:59: PM
The endoplasmic reticulum (ER) is a cell organelle in eukaryotic organisms that forms an interconnected network of tubules, vesicles, and cisternae. The ER contains a great amount of folds - but the membrane forms a single sheet enclosing a single closed sac. This internal space is called the ER lumen. There are two types of ER - Rough ER and Smooth ER. Ribosomes are present in RER and absent in SER.
The endoplasmic reticulum (ER) is repsonible for the production of the protein and lipid components of most of the cell's organelles.
Answered by | 4th May, 2012, 08:01: AM
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