Answer:
Importance of ER in membrane biosynthesis are
(i) RER synthesise proteins, which are passed to Golgi
apparatus.
(ii) The SER helps in manufacture of fat and lipids, which
along with protein help in building of cell membrane.
(iii) Thus, endoplasmic reticulum helps in transporting the proteins to
various places. (2)
Rough
Endoplasmic Reticulum (RER)
Smooth
Endoplasmic Reticulum (SER)
In
RER, ribosomes are attached to its surface
In
SER, ribosomes are not attached to its surface
It
helps in protein synthesis
It
helps in lipid synthesis
It
is formed of tubules and situated near the nucleus.
It
is formed of cisternae and situated near the plasma membrane.
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