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How are endoplasmic reticulam classified on the basis of presence or absence of ribosomes on their surface ​

Answer»

Answer

A elaborate network of membrane bound tubules highly concentrated in the endoplasm is called endoplasmic RETICULUM.

On the basis of presence or absence of ribosomes on their surface of endoplasmic reticulum is of TWO types.

Smooth endoplasmic reticulum :

  • The endoplasmic reticulum that are free of Ribosomes is known as smooth endoplasmic reticulum.

Rough endoplasmic reticulum :

  • The endoplasmic reticulum bearing ribosomes on its surface are known as rough endoplasmic reticulum.

Know more :

Functions of Endoplasmic reticulum

\bigstar Mechanical support : Microfilaments and E.R forms endoskeleton of cell.

\bigstar Formation of NUCLEAR membrane : Fragmented vesicles of disintegrated nuclear membrane and ER elements AROUND the chromosome to form a new nuclear membrane during cell division

\bigstar Cellular metabolism : The membranes of the endoplasmic reticulum provide an increased surface for metabolic ACTIVITIES.



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