Question

write short note on endoplasmic reticulum​

Answer 1

Answer:

A network of membranous tubles within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane..

It usually have ribosomes attached and is involved in protein and lipid synthesis..

Hope this helps u ✨

Answer 2

$\huge{\underline{\tt{\green{Answer-}}}}$

Endoplasmic reticulum (ER) was first discovered by claude(1951) under electron microscope.

The term 'endoplasmic reticulum’ was first coined by porter in 1945.

ER id abundant in liver, pancreas and other actively synthesizing cells. ER is absent in RBC, ova, embryonic cells and prokaryotes.

There are two types of endoplasmic reticulum:-

• rough endoplasmic reticulum
• Smooth endoplasmic reticulum

(I) Tubular forms with ribosomes. Tubular forms without ribosomes.

(II) it is more developed in cells actively engaged in protein synthesis. It is abundant in the cells engaged in glycogen and limit metabolism

• However, rough ER may be converted into smooth ER and vice versa, depending upon metabolic requirements of the cell.

$\huge{\underline{\tt{\blue{Functions-}}}}$

• it provides mechanical supports to the cytoplasm
• it plays an important role in the storage of protein.
• smooth ER is involved in glycogenesis.