The endoplasmic reticulum is a spider web of canals, each canal surrounded by a cellular membrane, that is embedded within the cytoplasm. Ribosomes (protein synthesis factories) typically are attached along the margin of the endoplasmic reticulum. DIAGRAMS: Golgi Complex / Rough Endoplasmic Reticulum PHOTOS
An extensive array of internal membranes in eukaryotes.
ER) Network of interconnected membranous structures within the cytoplasm of eukaryotic cells. The rough ER, which is associated with ribosomes, functions in the synthesis and processing of secretory and membrane proteins; the smooth ER, which lacks ribosomes, functions in lipid synthesis. ( Figure 5-47)
Labyrinthine, membrane-bounded compartment in the cytoplasm of eucaryotic cells, where lipids are secreted and membrane-bound proteins are made.
This organelle is made up of two parts: smooth ER and rough ER. The purpose of the rough ER is to collect proteins. The proteins collected are used either inside or outside the cell. The smooth ER, which is slightly tubular in shape, creates something called steroids. Smooth ER also stores ions. These ions are stored so the cell can keep a correct level of nutrients. Remember, smooth ER stores and contains and rough ER collects.
a structure within a plant or animal cell. It is a highly folded arrangement of membranes within the cytoplasm. There are two types, called rough and smooth endoplasmic reticulum. The rough endoplasmic reticulum is the site where secreted and membrane proteins are produced.
Intracellular complex of membranes in which proteins and lipids, as well as molecules for export, are synthesized and in which the biotransformation reactions of the mono-oxygenase enzyme systems occur: may be isolated as microsomes following cell fractionation procedures RT cytochrome P-420, cytochrome P-448, cytochrome P-450, microsome, mono-oxygenase, phase 1 reactions
stacks of flattened sacs involved in the production of various materials.
an organelle comprised of a series of membranes extending throughout the cytoplasm; two types exist, rough and smooth ER.
network of channels that run through the cytoplasm of a cell serving in intracellular transport, support, storage, synthesis, and packaging of molecules; some portions may have ribosomes attached (rough ER) & some lack ribosomes (smooth ER)
(ER) (Greek, endon = within +plasmein = to mold + Latin, reticulum = network) An extensive and convoluted network of membranes within a eukaryotic cell.
A system of membranes, distributed within the cytoplasm, that provides sites for protein synthesis and intracellular transport.
system of interconnected cytoplasmic membranes that transports materials within the cell
a network of interconnected tubules and sacs in a cell that synthesizes proteins, among other things.
Intracellular membranes that contain cytochrome P450 and other drug-metabolizing enzymes. During tissue homogenization, the endoplasmic reticulum vesiculates and forms microsomes.
a network or system of folded membranes and interconnecting tubules distributed within the cytoplasm of eukaryotic cells. The membranes form enclosed or semienclosed spaces. The endoplasmic reticulum functions in storage and transport, and as a point of attachment of ribosomes during protein synthesis.
Gr. endon: within + L. plasma: form; L. reticulum: little net] • A system of membrane-bounded tubes and flattened sacs found in the cytoplasm of eukaryotes. Exists as rough ER, studded with ribosomes; and smooth ER, lacking ribosomes.
A network of membrane-bound tubes and sacs in the cytoplasm. The endoplasmic reticulum is a major site of protein and lipid synthesis.
attached ribosomes bound to a complex network of lipoprotein membranes within cells.
An ultramicroscopic organelle of nearly all cells of higher plants and animals consisting of a more or less continuous system of membrane-bound cavities that ramify throughout the cytoplasm of a cell. See diagram of cell.
A membrane system that ramifies throughout the cytoplasm and is involved in the synthesis, processing, transport, and secretion of proteins.
("en-d&-'plaz-mik/ ri-'ti-ky&-l&m) — The E.R. is a network of membranes that stores, separates and transports substances within the cell. It is like a ribbon floating throughout the cytoplasm. There are two different types: Smooth E.R. - makes lipids, processes carbohydrates and modifies toxic chemicals in the cell. Rough E.R. contains ribosomes on its surface and makes proteins to be secreted by the cell, makes new cell membranes.
(ehn'-do-PLAHZ-mihk reh-TIHK-yoo-luhm) (ER) A cytoplasmic organelle that consists of a series of tubules with a hollow center. It functions in the transport of cellular products (smooth ER), and as a site for protein synthesis (if ribosomes are attached, called rough ER).
An extensive membranous network in eukaryotic cells, continous with the outer nuclear membrane and composed of ribosome studded (rough) and ribosome free (smooth) regions.
an extensive network of internal membranes within an eukaryotic cell which is necessary for protein synthesis.
A highly specialized and complex network of branching, interconnecting tubules (surrounded by membranes) found in the cytoplasm of most animal and plant cells. The rough endoplasmic reticulum is where ribosomes make proteins. It appears "rough" because it is covered with ribosomes. The smooth endoplasmic reticulum is the site for synthesis and metabolism of lipids.
A system of minute tubules within the cell involved in the biosynthesis of macromolecules.
EN-doe-PLAZ-mik reh-TIK-u-lum Interconnected membranous tubules and sacs that wind from the nuclear envelope to the cell membrane, along which proteins are synthesized (in rough ER) and lipids synthesized (in smooth ER). 70
network of thin tubes that transport newly synthesized proteins.
Cytoplasmic system of membranous cisternae which is the site of protein synthesis (rough) and lipid synthesis (smooth).
A specialized membranous organelle within eukaryotic cells responsible for synthesis of membrane-inserted proteins, and for proteins to be exported of proteins to the cell surface or beyond.
A network of intercellular, membrane bound tubes involved in protein synthesis and calcium regulation.
A series of interconnected, flattened cavities lined with a membrane about 4 nm thick, which is continuous with the nuclear membrane.
Organelle where proteins are sequestered after synthesis.
An elaborate network of membranes in eukaryotic cells that may or may not have ribosomes associated with them. If ribosomes are present (rough ER), ER functions in protein synthesis; If not (smooth ER), the ER functions in lipid and membrane assembly.
A membrane network within the cytoplasm of cells involved in the synthesis, modification, and transport of cellular materials.
A system of membranous sacs traversing the cytoplasm of eukaryotic cells. Provides transportation for delivery of synthesized proteins or for secretion of substances to the cell’s exterior in conjunction with Golgi bodies.
Tubular network fused to nuclear membrane - Goes through cytoplasm onto cell membrane - Stores, separates, and serves as cell's transport system - Smooth type: lacks ribosomes - Rough type (pictured): ribosomes embedded in surface
the cell's highway transport system composed of tubes and membranes connected to the nuclear membrane and extending through the cytoplasm that is also utilized for storing and separating
Makes lipids, breaks down drugs and other substances, and packages proteins for the Golgi complex ( www.studyisland.com) Endoplasmic 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. (cellbio.utmb.edu/cellbio/rer1.htm)
(E.R.) An organelle that is the site of the synthesis of certain molecules and is part of the cell's highway system.
(ER) (EN-doe-PLAZ-mik reh-TIK-yoo-lum) An organelle made up of interconnected tubes and flattened sacs. There are two kinds of ER: rough (because it is dotted with ribosomes) ER, which processes newly made proteins, and smooth ER, which helps make lipid and neutralizes toxins.
An extensive network of fine parallel membranes interspersed throughout the cytoplasm of the cell, used for the transport of substances inside of a cell.
(ER) network of membranes in eukaryotic cells which helps in control of protein synthesis and cellular organization.
A system of folded membranes that loop back and forth, spreading throughout the cytoplasm and providing a large surface area for cell reactions.
(ER) A network of membranous tubules in the cytoplasm of a cell; involved in the production of phospholipids, proteins, and other functions.
An organelle made up of membranes that form a system of tubes and flattened sacs. Some of the membranes are smooth (the smooth endoplasmic reticulum); others are rough (the rough endoplasmic reticulum) because they are dotted with ribosomes.
The network of membranes that extends throughout the cell and is involved in protein synthesis and lipid metabolism.
a system of cavities and minute connecting canals that occupy much of the cytoplasm of the cell
Organelle within cells; two varieties: smooth and rough
an organelle that synthesises lipids, detoxifies harmful substances and synthesises proteins.
A network of membranous tubules in the cytoplasm of a cell, endoplasmic reticulum is involved in the production of proteins, and other functions. Rough ER is studded with ribosomes; smooth ER is not.
The endoplasmic reticulum (ER) is a network of membranes in plant cells (and all eukaryotic cells) that control protein synthesis and cellular organization. ENTIRE An entire leaf has smooth edges (margins) (with neither teeth nor lobes). Eon Time Phanerozoic Eon 540 million years ago through today Proterozoic Eon 2.5 billion years ago to 540 million years ago Archaeozoic Eon 3.9 to 2.5 billion years ago Hadean Eon 4.6 to 3.9 billion years ago
The endoplasmic reticulum (endoplasmic meaning "within the cytoplasm," reticulum meaning "little net" in Latin) or ER is an organelle found in all eukaryotic cells that is an interconnected network of tubules, vesicles and cisternae that is responsible for several specialized functions: Protein translation, folding, and transport of proteins to be used in the cell membrane (e.g., transmembrane receptors and other integral membrane proteins), or to be secreted (exocytosed) from the cell (e.g., digestive enzymes); sequestration of calcium; and production and storage of glycogen, steroids, and other macromolecules.Spurger, L. (2002). Endoplasmic reticulum: Structure and function. University of Texas Medical Branch.