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What events occur in the muscle cell before calcium is released from the smooth endoplasmic reticulum?
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How is the endoplasmic reticulum like a shipping department?
The endoplasmic reticulum is like a shipping department because it packages and finishes any proteins before they are sent out.
What is the internal space of the endoplasmic reticulum called?
The internal space of the endoplasmic reticulum is called the cisternal space, or lumen, which is part of the "rough endoplasmic reticulum." The lumen is the staging area where the final modifications of protein synthesis take place, and its quality is analysed before releasing it for transportation to it's intended destination.
How are the functions of rubsomes and golgibodies and endoplasmic reticulum related to one another?
The Ribosomes contain the synthesized proteins which are then transferred to the golgi bodies for final packaging via the endoplasmic reticulum before being transported outside the cells.
What part of the cell carries secretions for export?
Golgi bodies package proteins for secretion before they are exported from the cell. Golgi bodies are found in the cytoplasm of the cell.
What are the two functions of rough endoplasmic reticulum?
The reason rough endoplasmic reticulum is coz of ribosomes. The ribosomes cover the surface of rough endoplasmic reticulum and make it appear bumpy under microscopic magnification. Ribosomes are the sites where proteins are created from amino acids. Rough endoplasmic reticulum is connected with the outer envelope of the cell nucleus. The following are the main functions of rough endoplasmic reticulum: 1)The prime rough endoplasmic reticulum function is the production and processing of specific proteins at ribosomal sites that are later exported. 2)As I said before, rough endoplasmic reticulum function involves, creation of two types of proteins. One is the type which fortifies and gets embedded into the reticulum membrane. The other types are water soluble membranes which after creation at ribosomal sites, pass through the membrane and into the lumen. 3)The function of rough endoplasmic reticulum doesn't end there. The proteins that enter are further processed inside, the proteins are folded into the right three dimensional shapes and carbohydrates may be added. 4)The next rough endoplasmic reticulum function is to transport these ready proteins to the sites where the are required. They may also be sent to the Golgi bodies for further advanced processing, through vesicles.
What happens to proteins with in the endoplasmic reticulum?
Newly made proteins are either released into the cytoplasm or transported into the rough endoplasmic reticulum. Those released into the cytoplasm may make their way into the nucleus if they have the nuclear localisation signal. Proteins that contain an N terminal signal sequence in their amino acid sequence will be transported into the rough endoplasmic reticulum or the RER membrane, where they will undergo further processing (mainly glycosylation) before vesicular transport to an organelle or the cell membrane.
What organelle modifies proteins before they are either used by the cell or transported out of the cell?
In a cell the rough and smooth Endoplasmic Reticulum modifies proteins. The Golgi Apparatus also modifies and packages proteins.
What does E.R. mean?
"Ere" (pronounced like "air") is an old English word meaning "before".
How are the Golgi body and endoplasmic reticulum different?
Well...The primary function of the Golgi apparatus is to process and package macromolecules, such as proteins and lipids, after their synthesis and before they make their way to their destination; it is particularly important in the processing of proteins for secretion. The Golgi apparatus forms a part of the cellular endomembrane system.And of courseEndoplasmic reticulum is a network of tubules, vesicles and sacs that are interconnected. They may serve specialized functions in the cell including protein synthesis, sequestration of calcium, production of steroids, storage and production of glycogen, and insertion of membrane proteins. The first part of this presentation will focus on rough endoplasmic reticulum which gets its name from the presence of ribosomes on its surface.The endoplasmic reticulum (ER) is repsonible for the production of the protein and lipid components of most of the cell's organelles. The ER contains a great amount of folds - but the membrane forms a single sheet enclosing a single closed sac. This internal space is called the ER lumen. The ER is additionally responsible for moving proteins and other carbohydrates.
What participates in lipid synthesis and synthesis of membrane or secreted proteins?
Lipid synthesis primarily involves enzymes located in the endoplasmic reticulum (ER). These enzymes include fatty acid synthase, which synthesizes fatty acids, and enzymes involved in glycerolipid and phospholipid synthesis. In addition, the synthesis of membrane or secreted proteins involves ribosomes attached to the ER, where these proteins are synthesized and processed before being transported to their target destinations.
Where in the body are calcium and phosphorus stored before being released into the bloodstream?
stomach
What is a simile from the Star Wars universe for an animal cell that could represent the Smooth Endoplasmic Reticulum?
The best star wars/cell simile is the Death Star I've used that one before and if you think about it it's really easy.
