Question

5.2.5 (i) ENDOPLASMIC RETICULUM (ER)
The endoplasmic reticulum (ER) is a large
network of membrane-bound tubes and
sheets.
(meaning of this)​

Answer 1

Answer:

Endoplasmic Reticulum is important for membrane biogenesis because it helps in the formation of lipids ans steroids which helps in building the cell membrane

"Membrane biogenesis is the process of formation of plasma membrane"

and plasma membrane is composed of:

•lipids

•proteins

ER has ribosomes which releases proteins. Therefore, it plays an important role.

Answer 2

IT MEANS THAT THAT THE ER IS MOSTLY MADE UP OF TUBE LIKE STRUCTURES WHICH HAS MEMBRANES...