Define Endoplasmic Reticulum

Endoplasmic reticulum is a large network of single membrane bound tubes and sheets as a result it is known as ERGASTOPLASM

It is of two types:

Rough Endoplasmic Reticulum (RER)Smooth Endoplasmic Reticulum (SER)
It plays a central role in protein synthesis.It plays an important role in lipid synthesis.
It is structurally more stable.It is structurally less stable.
This is formed of sac-like structures called cisternae.This is formed of vesicles and tubules.
It is located in the central cytoplasm, connected to the nuclear membrane.It is peripheral, connected to the plasmalemma.
Ribophorin proteins present at the junction between ribosomes and RERRibophorin protein is absent.
They are generally found in pancreatic cells.They are generally found in adipose cells.

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