The structure of endoplasmic reticulum is revealed only through the electron microscope. It forms a complex network of tubular membrane system throughout the cytoplasm. At places, this network is connected with the plasma membrane at one end and with the nuclear membrane at the other end forming continuous channels from plasma membrane to the
The endoplasmic reticulum occurs in two forms:
.smooth endoplasmic reticulum
.Rough endoplasmic reticulum
The functions of endoplasmic reticulum are:
.It forms the supporting framework of the cell.
. It divides the cell into small compartments for different metabolic activities.
. It is associated with the synthesis and storage of materials.
. Rough endoplasmic reticulum is the site of protein synthesis.
. Its channels act as pathways for the transport of materials from one part of the cell to the other, hence it is called the circulatory system of the cell.
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