Question

give a brief account of Endoplasmic reticulum ​

Answer 1

Answer:

Endoplasmic reticulum, or ER, is an interconnected network of membranous structureslike tubules, vesicles, and cisternae. Cisternae are the flattened disk-like membranous structures. Tubules are tubular in shape, while vesicles are sac-like structures.

There are two types of endoplasmic reticulum, namely smooth endoplasmic reticulum (SER) and rough endoplasmic reticulum (RER). When ribosomes get attached to the surface of smooth endoplasmic reticulum, it becomes rough endoplasmic reticulum.

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Smooth ER synthesizes fats and lipids.

It also takes part in the metabolism of carbohydrates.

It actively participates in drug detoxification.

It maintains the calcium ion concentration in the cytosol.

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Answer 2

Answer:

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Endoplasmic reticulum (ER) :

The endoplasmic reticulum is a large network of membrane-bound tube's and sheets.

It looks like long tubles or round or long bags.

The ER membrane is similar in structure to the plasma membrane.

Types of Endoplasmic reticulum :

There are Two types of ER-

• Rough endoplasmic reticulum (RER)
• Smooth Endoplasmic reticulum (SER)

Rough Endoplasmic reticulum (RER) :

RER looks rough due to the presence of ribosomes on its surface.

RER helps in proteins synthesis.

Smooth endoplasmic reticulum (SER) :

SER looks smooth because ribosomes are not attached to its surface.

SER helps in the synthesis of fats and lipids.

Biogenesis :

Fats and lipids are manufactured by smooth endoplasmic reticulum which helps in building the cell membrane.

This process is known as Biogenesis.

Functions of Endoplasmic Reticulum :

It serves as a channel for the transport of materials between various region's of the cytoplasm.

It also functions as a cytoplasmic framework providing a surface for biochemical activities.

It also functions as a cytoplasmic framework providing a surface for biochemical activities.It also helps in detoxifying many poisons and drugs.