Question

What is the function of the rough endoplasmic reticulum?

Answer 1

Solution

Ribosomes on the rough endoplasmic reticulum are called 'membrane bound' and are responsible for the assembly of many proteins. This process is called translation.

What is the Endoplasmic Reticulum?

The endoplasmic reticulum transpires in two forms: a type with a ribosome-studded surface and another with a smooth surface. The latter is called the smooth endoplasmic reticulum, and the former is called the rough endoplasmic reticulum. These membranes form continuous folds, eventually joining the outer layer of the nuclear membrane. Except for sperm cells and red blood cells, the endoplasmic reticulum is observed in every other type of eukaryotic cell.

Rough Endoplasmic Reticulum Structure

• The rough endoplasmic reticulum is named so because of its appearance.
• It is a series of connected flattened sacs having several ribosomes on its outer surface, hence the name.
• It synthesizes and secretes proteins in the liver,hormonesand other substances in the glands.
• Rough ER is prominent in cells where protein synthesis happens (such as hepatocytes)

Function

• The majority of the functions of rough ER is associated with protein synthesis.
• The rough endoplasmic reticulum also plays a vital role in protein folding.
• Also ensures quality control (regarding correct protein folding).
• The second most important function after protein synthesis and protein folding is protein sorting.

Related questions

1. Define structure and function of rough and smooth endoplasmic reticulum.
2. Differentiates the rough and smooth endoplasmic reticulum.