The transportation system of the cell which carries out various important functions is called the Endoplasmic Reticulum (ER).
It is a long tube which is bound by a membrane. This tube is placed around the nucleus and moves outward throughout the cell.
There are two distinct types of tubes in this network:
- Rough Endoplasmic Reticulum (RER) – This part of the tube has some granular structures attached to it called the Ribosomes. The tubes of RER appear rough due to ribosomes.
- Smooth Endoplasmic Reticulum (SER) – This part is a plain tube. It lacks ribosomes and so the tubes of this part appear smooth.
Both the tubes of RER and SER form a network throughout the cell which assists the movement of substances throughout the cytoplasm.
Summary
| Endoplasmic Reticulum | The transportation system of the cell which carries out various important functions is called the Endoplasmic Reticulum. |
| Types of Tubes in ER |
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