What is the main function of RER?
The RER is responsible for protein synthesis, modification, packaging, and quality control. We say that the RER makes proteins, but actually most of this is done by the ribosomes attached to its surface. These are called membrane-bound ribosomes. One key point to remember is that the RER makes secretory proteins only.
What does rough ER do in the liver?
The rough ER, studded with millions of membrane bound ribosomes, is involved with the production, folding, quality control and despatch of some proteins.
What are the two functions of RER?
1) RER. are generally present on the cells which are actively involved in protein synthesis. 2) It helps in protein synthesis and it’s secretion. 3) RER are extensive and continues with the the outer membrane of nucleus.
Why is the rough ER important?
The function of the rough ER is to provide a place so ribosomes can produce proteins, and proteins are one of the most important things in a cell. Rough ER is the organelle that reads the DNA instructions to make the proteins. Also, the rough ER is involved in the transportation of proteins to the Golgi apparatus.
How is RER different from SER what functions do they perform in a cell?
SER mainly manufactures and transports the lipids and protein and it helps in detoxification, whereas RER helps in the production, secretion, and transportation of the proteins and few hormones.
What is the function of SER and RER respectively?
Explanation: SER= its function is to manufacture the fats moecules or lipids. RER=it function is to synthesis protines.
Why does RER appear rough?
Rough Endoplasmic Reticulum (RER) appears rough because of the presence of ribosomes on it. Ribosomes are sites for biological protein synthesis. Polyribosomes are aggregation of several ribosomes held together by a string of mRNA.
What is the true about ribosomes?
Ribosome is a small spherical body within a living cell that is the site of protein synthesis. Ribosomes consist of two subunits, one large and one small, each of which comprises a type of RNA (called ribosomal RNA) and protein. They are found in both eukaryotic and prokaryotic cells.
What would happen without the rough ER?
The rough ER has attached ribosomes critical for protein synthesis. Smooth ER produce lipids and steroids etc so basically cells NEED these organelles. Without them many enzymatic processes would be unable to occur ultimately killing the cell.
What are the major morphological differences between the RER and SER?
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.
What is the difference between functions of the rough ER and smooth ER?
Smooth ER produces lipids. They also store lipids and proteins. On the contrary, rough ER synthesizes proteins and stores them. The presence of ribosomes, bound on the surface of the rough ER lets them synthesize proteins.
What is the function of RER class 9th?
1)It provides a pathway for distribution of nuclear material from one cell to other. 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.
