Question

Differentiate between rough and smooth endoplasmic reticulum. How is endoplasmic reticulum, important for membrane biogenesis?

Answer 1

THE ROUGH ENDOPLASMIC RETICULUM HAS RIBOSOMES ATTACHED TO IT BECAUSE OF WHICH THEY SYNTHESIS PROTEINS AND THE SMOOTH ENDOPLASMIC RETICULUM DOES NOT HAVE ATTACHED RIBOSOMES AND THEY SECRETE LIPIDS.

ENDOPLASMIC RETICULUM IS IMPORTANT IN MEMBRANE BIOGENESIS BEACUSE THE MAIN RAW MATERIAL OR SOURCE FOR THE FORMATION OF MEMBRANE IS LIPOPROTEINS (LIPIDS AND PROTEINS) IS PROVIDED BY ENDOPLASMIC RETICULUM [BECAUSE CELL MEMBRANE IS MADE UP OF LIPOPROTEINS]

Answer 2

Rough endoplasmic reticulum contains ribosomes on them but Smooth endoplasmicreticulum does'nt contain.endoplasmic reticulum contains granules called ribosomes. this parts are called as RER.areas/sections which do not contain are called as SER. RER is site of manufactures of protein. SER helps in manufacture of fat molicules, or lipids.