Question

Write the Functions of endoplasmic reticulum ​

Answer 1

Endoplasmic reticulum (ER), in biology, a continuous membrane system that forms a series of flattened sacs within the cytoplasm of eukaryotic cells and serves multiple functions, being important particularly in the synthesis, folding, modification, and transport of proteins .

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Answer 2

Answer:

Functions of Rough Endoplasmic Reticulum (RER)  

• It contains ribophorins for providing attachment to ribosomes.

It bears enzymes in the region of pores for modifying polypeptides synthesised by attached ribosomes, e.g., glycosylation.

• It synthesises serum proteins, membrane proteins and a number of other proteins.

Proteins and enzymes synthesised by ribosomes enter the channels of RER both for intracellular use as well as secretion.

• It provides enzymes precursors for the formation of lysosomes by Golgi complex.

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Functions of Smooth Endoplasmic Reticulum (SER)

• It is responsible for synthesis of fats inside the cells of adipose tissue, formation of sphaerosomes, synthesis of glycogen as well as glycogenolysis in liver cells, synthesis of sterol, etc.

• It can develop from RER by discarding ribosomes.