What are some facts about endoplasmic reticulum?

Answer 1

The endoplasmic reticulum (ER) is a large network of membrane-bound tubes and sheets.

It looks like long tubules or round or oblong bags (vesicles).

There are two types of ER

I. Rough Endoplasmic Reticulum (RER)

 RER looks rough under a microscope because it has particles called ribosomes attached to its surface.

 The ribosomes are the sites of protein manufacture.

II. Smooth Endoplasmic Reticulum (SER).

 SER helps in the manufacture of fat molecules, or lipids, important for cell function.

 Some of these proteins and lipids help in building the cell membrane. This process is known as membrane biogenesis.

 Some other proteins and lipids function as enzymes and hormones.

Functions of Endoplasmic Reticulum :

 ER is to serve as channels for the transport of materials (especially proteins) between various regions of the cytoplasm or between the cytoplasm and the nucleus.

 The ER also functions as a cytoplasmic framework providing a surface for some of the biochemical activities of the cell.

 In the liver cells of the group of animals called vertebrates , SER plays a crucial role in detoxifying many poisons and drugs

I have given it in point form to make it easier.Hope this is a good contribution from a 13 year old.............

Answer 2

The endoplasmic reticulum (ER) is a network of membranous sacs and tubules found in eukaryotic cells. It plays a key role in protein and lipid synthesis, as well as in the detoxification of drugs and other harmful substances. The ER can be divided into rough ER, which is studded with ribosomes and involved in protein synthesis, and smooth ER, which is involved in lipid metabolism and detoxification.

Answer 3

It fucntions in the synthesis of lipids, and proteins. It provides attachment for ribosomes. It is composed of membranous sacs

Answer 4

It is the "delivery network" that serves as the internal delivery system for the cell. It is also described as a tube-like network.