What does a large smooth endoplasmic reticulum mean?
What does a large smooth endoplasmic reticulum mean?
Smooth endoplasmic reticulum (SER), meshwork of fine disklike tubular membrane vesicles, part of a continuous membrane organelle within the cytoplasm of eukaryotic cells, that is involved in the synthesis and storage of lipids, including cholesterol and phospholipids, which are used in the production of new cellular …
How does the smooth ER grow?
The extent of the smooth ER network depends on the actin and microtubule cytoskeleton of the cell. ER tubules can slide along the cytoskeletal framework using motor proteins, or grow along with a microtubule at its plus end.
What is a good analogy for smooth ER?
smooth endoplasmic reticulum « hallways: Factories have hallways through which information from the office travels to the workers in all departments. Similarly, the cell has smooth endoplasmic reticulum through which it is believed that messenger RNA travels from the nucleus to places where it is decoded.
What can a smooth endoplasmic reticulum be compared to in real life?
The Smooth Endoplasmic Reticulum is considered smooth because of its smooth appearance. The smooth endoplasmic reticulum is responsible for lipid synthesis. It processes a variety of metabolic processes such as drug detoxification A real life example would be a high way.
What are the functions of SER and RER?
Introduction on Rough and Smooth Endoplasmic Reticulum
| RER-Rough Endoplasmic Reticulum | SER-Smooth Endoplasmic Reticulum |
|---|---|
| They are found near the nucleus of the cell. | They are found away from the nucleus in the cell. |
| Their function is to synthesize proteins. | Their function is to synthesize lipids. |
What is the main function of smooth endoplasmic reticulum?
The smooth endoplasmic reticulum functions in many metabolic processes. It synthesizes lipids, phospholipids as in plasma membranes, and steroids. Cells that secrete these products, such as cells of the testes, ovaries, and skin oil glands, have an excess of smooth endoplasmic reticulum.
What can the smooth ER be compared to in a school?
The Smooth ER is structure that does not contain ribosomes and is the passageway from the nucleus that transports lipids (fats) throughout the cell. The School Bus transports students to the school like the Smooth ER transports the Lipids.
What is a good analogy of a cell?
In a cell, the endoplasmic reticulum helps with the transport of material through the cell; In a car, the fuel line provides fuel to the engine from the gas tank. A car’s driver is equivalent to the nucleus of a cell.
What is endoplasmic reticulum compared to?
The endoplasmic reticulum is like the highway system because the cell uses the endoplasmic reticulum to move material throughout the cell like people use highways to move throughout the country.
What is a Golgi body like in real life?
The Golgi Apparatus is like a small packaging system. It’s particular function, is to store/package protein enzymes and carbohydrates before they are sent to a location. An example of the Golgi Apparatus is a postal office. A postal office packages and sends mail to different locations.
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 is the function of RER Class 9?
Rough endoplasmic reticulum (RER), series of connected flattened sacs, part of a continuous membrane organelle within the cytoplasm of eukaryotic cells, that plays a central role in the synthesis of proteins.
Why does the smooth endoplasmic reticulum have a rough appearance?
When proteins are destined to be part of the cell membrane or exported from the cell, the ribosomes assembling them attach to the endoplasmic reticulum, giving it a rough appearance. Smooth endoplasmic reticulum lacks ribosomes and helps synthesize and concentrate various substances needed by the cell.
What is the function of the endoplasmic reticulum?
The endoplasmic reticulum can either be smooth or rough, and in general its function is to produce proteins for the rest of the cell to function. The rough endoplasmic reticulum has on it ribosomes, which are small, round organelles whose function it is to make those proteins.
How big is the smooth endoplasmic reticulum in yeast?
The smooth endoplasmic reticulum is primarily composed of three-dimensional polygonal networks of tubules called cisternae. They are about 50 nm in diameter in mammals and 30 nm in diameter in yeast.
Is the adrenal cortex a smooth endoplasmic reticulum?
Steroid-secreting cells are characterized by abundant smooth endoplasmic reticulum whose membranes contain the enzymes involved in sterol and steroid synthesis. The adrenal cortex is an important organ for the synthesis and secretion of steroid hormones.