Question

Give a brief note on the endomembrane system.​

Answer 1

The endoplasmic reticulum(ER) is the organelle that consists of irregular network of tubular double Membrane which are continuous and is connected with the plasma Membrane and nuclear Membrane.

• The ER is divided into two categories :

1. Smooth ER
2. Rough ER

• Smooth ER:- It is called smooth endoplasmic reticulum when no ribosomes are attached to the membrane.
• Rough ER:- It is called rough endoplasmic reticulum when ribosomes are attached to it's Membrane.

Functions :-

• Smooth ER helps in the synthesis of lipid,glycogen, and steroid hormones.
• Rough ER is included in the synthesis of proteins.

Answer 2

Endomembrane System :

Inside cell, some organelles with lipid layer work in a coordinated manner and form Endomembrane System

Organelles of Endomembrane System :

• Endoplasmic reticulum
• Golgi body
• Lysosome
• Vesicle

Organelles inside the cell are not a part of Endomembrane System : Peroxisome, Mitochondria, Chloroplast.