CBSE Class 9 Answered

Rough Endoplasmic Reticulum (RER)

Smooth Endoplasmic Reticulum (SER)

• It possesses ribosomes attached to its membrane.

• It does not have ribosomes on its membrane.

• It is formed of cisternae and a few tubules.

• It is formed of vesicles and tubules.

• It participates in the synthesis of enzymes and proteins.

• It synthesises glycogen, lipids and steroids.

• It helps in the formation of lysosomes.

• It gives rise to spherosomes/ oleosomes.

• It is internal and connected with the nuclear envelope.

• It is peripheral and may be connected to plasmalemma.

• Ribophorins are present and help ribosomes attach to ER.

• It is devoid of ribophorins.

• It might develop from the nuclear envelope.

• It develops from rough endoplasmic reticulum.

• It provides proteins and lipids for Golgi apparatus.

• It provides vesicles for cis-face of Golgi apparatus.