Question

Differentiate between RER and SER.How is endoplasmic reticulum important for memebrane biogenesis?

Answer 1

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In RER, ribosomes are attached due to which its surface is rough whereas in SER,ribosomes are not attached due to which its surface is smooth.RER synthesis proteins whereas SER synthesis lipids.

Endoplasmic reticulum important for memebrane biogenesis as it helps in formation of plasma membrane .

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Answer 2

Both the smooth and rough endoplasmic reticulum help in the production and storage of proteins The main difference is that one contains ribosomes on it and the other does not.

The rough endoplasmic reticulum (RER) has ribosomes on its surface. This is what give the RER a "rough" appearance. Rough ER looks like sheets.The RER synthesizes (makes) and packages proteins. The RER is attached to the nuclear membrane. The Golgi apparatus tends to be on the other side of the RER.

The smooth endoplasmic reticulum (SER) does not contain ribosomes. The Smooth ER looks more like tubes. The SER helps in the storage of proteins and lipids. Cells that produce oils have a higher ratio of SERs than do other cells. The smooth endoplasmic reticulum can be found dispersed throughout the cytoplasm