Question

What is endoplasmic reticulum ???​

Answer 1

Answer:

It is an organelle associated with nuclear membrane, including ribosomes RER with main function of protein synthesis and for SER lipid synthesis.

Explanation:

1. The endoplasmic reticulum is so fine in structure, its existence is revealed only through an electron microscope.
2. It is an irregular network of double membranes distributed from nuclear membrane (nucleus) to cell (plasma) membrane over entire cytoplasm.
3. It includes various parts such as tubules, vesicles, cisternae (folding). It forms supporting frame work of the cell and serves as a pathway for distribution of the materials from one part of the cell to other.
4. It also carries the work of conduction of proteins. Toxins that have entered in our body through food, air, water are made water soluble by ER and then flushed out of the body. It appears rough when particles of ribosomes are attached to it, otherwise seems to be smooth without them. Hence it is names as SER and RER.

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Answer 2

Answer:

The endoplasmic reticulum is, in essence, the transportation system of the eukaryotic cell, and has many other important functions such as protein folding. It is a type of organelle made up of two subunits – rough endoplasmic reticulum, and smooth endoplasmic reticulum