Question

Write 5 function of rough endoplasmic reticulum and smooth endoplasmic reticulum

Answer 1

Rough endoplasmic reticulum is an organelle found in eukaryotic cells. Its main function is to produce proteins. It is made up of cisternae, tubules and vesicles. The cisternae are made up of flattened membrane disks, which are involved in the modification of proteins.

The smooth endoplasmic reticulum (smooth ER) is a membranous organelle found in most eukaryotic cells. ... Its main functions are the synthesis of lipids, steroid hormones, the detoxification of harmful metabolic byproducts and the storage and metabolism of calcium ions within the cell.

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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.

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.