Contents
What is smooth ER and its function?
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.
What is the difference between the function of rough and smooth ER?
The main difference between these two terminologies is that the Smooth Endoplasmic Reticulum is known for stocking the lipids and proteins. It is not bounded by ribosomes. Whereas, the Rough Endoplasmic Reticulum is bounded by the ribosomes and also stores proteins.
What is the function of RER and SER Class 9?
2)Certain enzymes present in SER synthesise fat,steroids,cholesterol. 3)RER help in transport of protein which are synthesised by ribosomes on their surface. 5)It function as cytoplasmic framework providing a surface for some of the biochemical activities of the cell.
What’s the difference between a rough ER and a smooth ER?
On the other hand, a smooth ER does not have ribosomes on its surface. The other major difference between the smooth endoplasmic reticulum and rough endoplasmic reticulum are summarized below: It possesses ribosomes attached to its membrane. It does not have ribosomes on its membrane. Formed of cisternae and a few tubules.
What is the function of the rough surface of the ER?
The rough surface of the ER feature differentiates it from the main ER functionally and superficially. In addition, the rough ER membrane covers the nuclear envelope around the nucleus of the cell. Furthermore, the rough ER near the Golgi apparatus helps in many things.
What makes an ER different from a rough reticulum?
Structurally, there are two types of endoplasmic reticulum in a cell. They are: The most basic difference between RER and SER is the presence of ribosomes. When ribosomes attach to the surface of an ER, it gives a characteristic rough appearance; hence it is called Rough ER. On the other hand, a smooth ER does not have ribosomes on its surface.
Why is the ER called the smooth endoplasmic reticulum?
Smooth endoplasmic reticulum does not have these ribosomes, hence appear “smooth.” The structure of endoplasmic reticulum is shaped like a sac. Since ER is of two types, each has its own distinguishing features: The rough endoplasmic reticulum is named so because of its appearance.