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Ribosomes. RER are site of ribosome synthesis.This is what makes them rough endoplasmic reticulum.
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∙ 12y ago
In the cisternae of the rough endoplasmic reticulum (RER), you can find ribosomes attached to the cytoplasmic side. These ribosomes are responsible for protein synthesis. The cisternae act as a site for the folding and modification of proteins before they are transported to other cellular locations or secreted outside the cell. The RER is particularly abundant in cells that produce large amounts of proteins, such as plasma cells and pancreatic cells.
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Are ribosomes found on the RER?
yes they are attached with RER and therefore give the rough appearance to them as compared wtih SER
Are the found freely floating in the cytoplasm?
Ribosomes are found freely in the cell cytoplasm and they are also found attached to a membrane system called the RER.
What are cisternae in Golgi apparatus?
# A cisterna (plural cisternae) comprises a flattened membrane disk that makes up theGolgi apparatus. A typical Golgi has anywhere from 3 to 7 cisternae stacked upon each other like a stack of dinner plates, but there are usually around 6. The cisternae carry Golgi enzymes to help or to modify cargo proteins traveling through them destined for other parts of the cell. # The cisternae also carry structural proteins important for its maintenance as a flattened membrane and its stacking upon each other. # The earliest cisternae are called the cis-cisternae, followed by the medial cisternae, then the trans-cisternae (as they move away from the endoplasmic reticulum). # The formation of new cisternae is often called the cis-Golgi network and at the end of the Golgi where transport to other parts of the cell occurs is called the trans-Golgi network. Both are thought to be specialized cisternae leading in and out of the Golgi apparatus. # Cisternae may also refer to flattened regions of the rough endoplasmic reticulum.
What cells have RER?
All cells of organisms have RER, or rough endoplasmic reticulum. So plant-, animal-, fungi- and bacteriacells contain RER.
What are the steps of the secretory pathway?
Protein SynthesisEndoplasmic Reticulum-->cis Golgi cisternae --> medial Golgi cisternae --> trans Golgi Cisternae --> Plasma membraneExtra Cellular SpaceAs they are being synthesized, secretory proteins enter the lumen of the endoplasmic reticulum. From the ER, vesicles transport these proteins to the Golgi, where they are sequentially modified and concentrated in a cis-to-trans direction. Secretory vesicles bud from the Golgi and move along cytoskeletal filaments to eventually fuse with the plasma membrane, secreting their protein cargo. Each of these transport steps requires specialized proteins to ensure that the cargo is sent to the proper location and is able to fuse with the target membrane.
What is the function of the cisternae?
The function of the cisternae is the modification of proteins into the final products. The cisternae are found and make up the Golgi Apparatus.
Are ribosomes found on the RER?
yes they are attached with RER and therefore give the rough appearance to them as compared wtih SER
Endoplasmic reticulum is found in what?
The endoplasmic reticulum is an organelle of cells, and is comprised of a membranous network of cisternae.
Where is the ribosome is found?
In eukariyotes,80s ribosomes found in cytoplasm and on RER.70s in mitochondria and chloroplast.
Where is the ribosome found at?
In eukariyotes,80s ribosomes found in cytoplasm and on RER.70s in mitochondria and chloroplast.
Are the found freely floating in the cytoplasm?
Ribosomes are found freely in the cell cytoplasm and they are also found attached to a membrane system called the RER.
When was RER A created?
RER A was created in 1977.
Where is the cisternae located?
liver
What are cisternae in Golgi apparatus?
# A cisterna (plural cisternae) comprises a flattened membrane disk that makes up theGolgi apparatus. A typical Golgi has anywhere from 3 to 7 cisternae stacked upon each other like a stack of dinner plates, but there are usually around 6. The cisternae carry Golgi enzymes to help or to modify cargo proteins traveling through them destined for other parts of the cell. # The cisternae also carry structural proteins important for its maintenance as a flattened membrane and its stacking upon each other. # The earliest cisternae are called the cis-cisternae, followed by the medial cisternae, then the trans-cisternae (as they move away from the endoplasmic reticulum). # The formation of new cisternae is often called the cis-Golgi network and at the end of the Golgi where transport to other parts of the cell occurs is called the trans-Golgi network. Both are thought to be specialized cisternae leading in and out of the Golgi apparatus. # Cisternae may also refer to flattened regions of the rough endoplasmic reticulum.
What is the ''RER''?
That is The Rough Endoplasmic Reticulum in a cell. (RER)
Why is RER rough?
(RER) means rough endoplasmic reticulam
When was RER B created?
RER B was created in 1977.
