The endoplasmic reticulum (ER) is an organelle that appears in all eukaryotic cells, usually surrounding the nucleus. The ER is made of a series of membranes that extend throughout the jelly-like cytoplasm and kind of form a maze. The ER's main function is to manufacture and transport materials to other places.
The ER has two halves: rough ER and smooth ER. Rough ER is spotted with ribosomes (organelles made of RNA and proteins that produce more proteins from other RNA), while smooth ER contain no ribosomes. Instead, smooth ER makes lipids and does other things, like decomposing drugs and alcohol.
A protein made in a ribosome on rough ER enters the lumen of the ER, then the protein can be modified by attaching to sugar chains, which can help fold or stabilize the protein.
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A complex system of membranes that form a collection of membrane-bound cavities in a cell.
here are several definitions i found on dictionary.com
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
endoplasmic reticulum-noun Cell Biology. a network of tubular membranes within the cytoplasm of the cell, occurring either with a smooth surface (smooth endoplasmic reticulum) or studded with ribosomes (rough endoplasmic reticulum), involved in the transport of materials.
American Heritage Dictionary - Cite This Source - Share This endoplasmic reticulum
n. A membrane network within the cytoplasm of cells involved in the synthesis, modification, and transport of cellular materials.
endoplasmic reticulum (Ä›n'dÉ™-plÄz'mÄk) Pronunciation Key
An organelle consisting of a network of membranes within the cytoplasm of eukaryotic cells that is important in protein synthesis and folding and is involved in the transport of cellular materials. The endoplasmic reticulum can be continuous in places with the membrane of the cell nucleus. The function of the endoplasmic reticulum can vary greatly with cell type, and even within the same cell it can have different functions depending on whether it is rough or smooth. â—‡ The rough endoplasmic reticulum is a series of connected flattened sacs that have many ribosomes on their outer surface. Rough endoplasmic reticulum synthesizes and secretes serum proteins (such as albumin) in the liver, and hormones (such as insulin) and other substances (such as milk) in the glands. â—‡ The smooth endoplasmic reticulum is tubular in form and is involved in the synthesis of phospholipids, the main lipids in cell membranes. Smooth endoplasmic reticulum is the site of the breakdown of toxins and carcinogens in the liver, the conversion of cholesterol into steroids in the gonads and adrenal glands, and the release of calcium ions in the muscles, causing muscle contraction. The smooth endoplasmic reticulum also transports the products of the rough endoplasmic reticulum to other cell parts, notably the Golgi apparatus. See more at cell.
my knowlage: an organelle found inside of some cells often abbreaviated as ER. A rough ER is an ER with ribosomes stuck to it, and a smooth ER is one without ribosomes. the ER is often found around the nucleus. it can sometimes be confused with the Golgi complex because of their similar looking shape.
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the endoplasmic reticulum(er) is a large network of membrane bound tubes and sheets.it look like long tubules or round or oblong bags.the er membrane is similar in stucture to the plasma membrane .there are two types of endoplasmic reticulum ... they are rough endoplasmic reticulum and smooth endoplasmic reticulum .RER looks rough under the microscope because it has particles called ribosomes attached to its surface.The ribosomes which are present in all active cells,are the sites of protein manufacture.The manufacture proteins are then sent to various places in the cell depending on need using er.the SER helps in the manufacture of fat molecules or lipids important for cell function.Some of these proteins and lipids help in building the cell membrane.this process is known as biogenesis.Some other proteins and lipids function as enzymes and hormones.Although the er varies greatly in appereance in different cells,it always forms a network system.
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The ER is an organelle of the endomembrane system that is of two main parts; rough and smooth.
The rough part is, basically, tasked with the modification of proteins and the smooth part is tasked with lipid sythesis and detoxification.
Endoplasmic reticulum is a microscopic organelle contained in cells. It is the site of protein synthesis.
Endoplasmic reticulum is a form of organelle that is present in the cells of eukaryotic organisms.
Endoplasmic reticulumn is flat and tubular shaped organell.It is found in eukariyotes.It is single membranous.
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Rough endoplasmatic reticulumRough endoplasmic reticulum
Yes, the extern membrane from nuclear envelope is continuos with the rough endoplasmatic reticulum
Endoplasmic Reticulum, or Reticulum for short.
The surface for chemical activity in a cell is the endoplasmic reticulum. It is a membranous network found in the cytoplasm.
The endoplasmic reticulum is a packaging system. There is a rough and a smooth endoplasmic reticulum. The rough endoplasmic reticulum is important in the synthesis and packaging of proteins. The smooth endoplasmic reticulum is important in the creation and storage of steroids.
endoplasmatic reticulum
smooth endoplasmic reticulum
It's the Endoplasmic Reticulum
at the endoplasmatic reticulum
Rough endoplasmatic reticulumRough endoplasmic reticulum
It's endoplasmatic reticulum or ER for short.
The smooth endoplasmatic reticulum is a part of cells, not a disease. The cells of your ovary all have one, and they need it to function.
The ER, or Endoplasmatic Reticulum, is an organel inside a plant cell that a plant uses for protein synthesis.
Yes, the extern membrane from nuclear envelope is continuos with the rough endoplasmatic reticulum
Two organelles are able to modify proteins in a way that they'll get send out of the cell: the endoplasmatic reticulum and the golgi appartus.
There are two. The first is a Golgi body. And the other are smooth and rough ERgolgi body
Ribosomes are involved in protein synthesis inside the cell, they are very small And are located either freely innthe cytoplasm or atached to the Rough endoplasmatic reticulum. They are roundish in shape.