Question

functions of rough endoplasmic reticulam

Answer 1

rough endoplasmic reticulum helps in transporting proteins to various places.....

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Answer 2

1-Surface for Ribosomes
=The RER (rough endoplasmic reticulum) provides space and ribophorins for the attachment of ribosomes 

2-Surface for protein synthesis
=The RER offers extensive surface on which protein synthesis can be conveniently carried on by ribosomes.
 
3-Packaging
=The proteins formed on ribosomes pass into the ER lumes where they are modified.

4-Smooth ER formation
=The RER gives rise to the smooth ER by loss of ribosomes.

5-Formation of Precursors.
=The RER produces enzyme precursors for the formation of lysosomes by Golgi Complex.