Question

Write the common functions of ser and rer

Answer 1

1) Synthesis of phospholipids

-performed by enzymes that are membrane proteins, active side on cytosolic side of the ER membrane
-precursors of phospholipids (come from cytosol)
synthesized phospholipids are inducted in the cytosolic layer of ER membrane
-to prevent asymetric growth of the membrane some of the phospholipids are transfered into the inner layer of the membrane
-> transverse diffusion flip-flop performed by flipase
-->phospholipids a+can be sent to nuclear envelope or oter membranes

2) Biogenesis of membranes

In ER membrane proteins + membrane lipids are synthesized
-Majority of new membrane compounds reach over some organelles and plasma membrane by transport vesicles from ER
-The vesicles fuse with other organelles f.ex golgi apparatus ->membrane components are included

3) Cytoplasmic circulatory system for the intraccellular transport of substances on different ways

-can move through the lumen
-within the membrane by lateral diffusion
-ER membrane is very fluid -> allows diffusion of proteins+lipids to outer nuclear membrane

4)Because ER is in cytoplasm

->role of mechanic support and compartmentalization of cytoplasm

5) exchange

mediates exchange btw. cytosol and lumen of ER through passive+active transport
-like transport of Calcium by Ca2+ -ATPase

Answer 2

Hii..
Here is your answer..

=>Smooth and Rough both the Endoplasmic Reticulum helps in production and storage of Protein.

=>The major difference is that Rough Endoplasmic Reticulum contain Ribosomes on it and Smooth Endoplasmic Reticulum does not contain Ribosomes on it.

=>Rough Endoplasmic Reticulum synthesis Proteins.

=>Smooth Endoplasmic Reticulum synthesis Lipids.

Hope it helps uh..✌️✌️✌️