Difference between Smooth Endoplasmic Reticulum and Rough Endoplasmic Reticulum - Future Study Point

Difference between Smooth Endoplasmic Reticulum and Rough Endoplasmic Reticulum

RER and SER

Smooth Endoplasmic Reticulum and Rough Endoplasmic Reticulum

RER and SER

Smooth endoplasmic reticulum (SER) is a meshwork of fine disklike tubular membrane vesicles which is part of a continuous membrane organelle within the cytoplasm of eukaryotic cells. The smooth endoplasmic reticulum is involved in the synthesis and storage of lipids including cholesterol and phospholipids that are used in the production of the new cellular membrane. The rough endoplasmic reticulum consists of ribosomes on its outer surface which are protein-synthesizing particles that give RER to give the membrane its rough appearance.SER and RER exist in both animal and plant cells.

Table of content:

  • Difference between RER and SER
  • FAQ’s

Difference between Smooth Endoplasmic Reticulum and Rough Endoplasmic Reticulum

     SER    RER
The smooth endoplasmic reticulum doesn’t have ribosomes on its outer surfaceThe rough endoplasmic reticulum consists of ribosomes on its outer surface
It is formed of vesicles and tubulesIt is formed of cisternae and tubules
It synthesizes glycogen, lipid, and steroidIt synthesizes protein and enzymes
It helps in the formation of oleosomesIt helps in the formation of lysosomes
SER is found in those cells where glycogen, lipid, and steroid synthesis takes place.RER is found in those cells where protein synthesis takes place in large amounts.
It is called smooth ER because of the smooth appearance of its surface due to the  absence of ribosomesIt is called rough ER because of the rough appearance of its surface due to the presence of ribosomes
It develops from the rough endoplasmic reticulumIt develops from the nuclear membrane

FAQ’s

Q1.What is ER?

Ans.ER(endoplasmic reticulum) is a cell organelle that originates from the nuclear envelope which is of cisterna and is continuously shaped in the form of tubules and vesicles on the surface of the nuclear membrane.ER synthesizes proteins and lipids.

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Q2.What are the types of ER?

Ans. There are two types of ER.

(i) RER(rough endoplasmic reticulum)

(ii) SER(smooth endoplasmic reticulum)

Q3.What is the function of RER?

Ans. RER participates in the synthesis of protein and enzymes.

Q4.What is the function of SER?

Ans. SER participates in the synthesis of lipids, glycogen, and steroid.

Q5.What is the strucure of  SER and RER?

Ans.RER is of the shape of cisterna that is continued to get the shape of tubules and vesicles.

Q6.What is the exact location of RER and SER?

Ans. RER originates from the nuclear membrane and extends to throughout the cell on the cytoplasm within the cell membrane but its occurrence is denser around the nucleus and Golgi apparatus.SER originates from the lumen of RER also located within the cell in the same way as RER

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