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Vesicles in Biological Definition

Golgi apparatus

... be secreted from the cell, and sort them within vesicles . Thus, it functions as a central delivery system for the cell. Most of the transport vesicles that leave the endoplasmic reticulum (ER), ... compositions. Function The transport vesicles from the ER fuse with the cis face of the Golgi ...

Neurotransmitter

... neurotransmitter molecules are packaged in vesicles . When an action potential travels to the ... to open. Calcium then stimulates the transport of vesicles to the synaptic membrane: the vesicle and cell ... They are usually packaged into dense-core vesicles and are released through a similar, but ...

Synapse

... : Within the pre-synaptic nerve terminal, vesicles containing neurotransmitter sit "docked" and ... ion channels , at which point the vesicles fuse with the membrane and release their contents ... regulation Following fusion of the synaptic vesicles and release of transmitter molecules into the ...

Vesicle

... the cytosol by at least one lipid bilayer . vesicles store, transport , or digest cellular ... to be different from the cytosolic environment. vesicles are a basic tool of the cell for organizing ... as well as being chemical reaction chambers. Many vesicles are made in the Golgi apparatus , but also in ...

Bone

... by osteoblasts). Mineralisation involves osteoblasts secreting vesicles containing alkaline phosphatase. This cleaves phosphate groups and acts as the foci for calcium and phosphate deposition. The vesicles then rupture and act as a centre for crystals to grow on. The organic ...

Cytoskeleton

... plays important roles in both intra-cellular transport (the movement of vesicles and organelles, for example) and cellular division. Contents ... and kinesins they transport organelles like mitochondria or vesicles .) the axoneme of cilia and flagella the mitotic spindle ...

Endoplasmic reticulum

... are synthesized most of them leave to the Golgi apparatus within vesicles . The rough ER also modifies, folds, and controls the quality of ... that are destined for places outside the ER are packed into transport vesicles and moved along the cytoskeleton towards their destination. The ER is ...

Eukaryote

... referred to as the endomembrane system . Simple compartments, called vesicles or vacuoles , can form by budding off of other membranes. Many cells ... in stacks of flattened vesicles, called Golgi bodies or dictyosomes. vesicles may be specialized for various purposes. For instance, lysosomes ...

Endoplasmic reticulum

... are synthesized most of them leave to the Golgi apparatus within vesicles . The rough ER also modifies, folds, and controls the quality of ... that are destined for places outside the ER are packed into transport vesicles and moved along the cytoskeleton towards their destination. The ER is ...

Endoplasmic reticulum

... are synthesized most of them leave to the Golgi apparatus within vesicles . The rough ER also modifies, folds, and controls the quality of ... that are destined for places outside the ER are packed into transport vesicles and moved along the cytoskeleton towards their destination. The ER is ...

Endoplasmic reticulum

... are synthesized most of them leave to the Golgi apparatus within vesicles . The rough ER also modifies, folds, and controls the quality of ... that are destined for places outside the ER are packed into transport vesicles and moved along the cytoskeleton towards their destination. The ER is ...

Apoptosis

... due to the degradation of DNA [4] . Plasma membrane blebbings. The cell is phagocytosed , or , The cell breaks apart into several vesicles called apoptotic bodies , which are then phagocytosed. Biochemical signals for safe disposal The dying cells that have just been ...

Cytosol

... ) and (in many organisms) maintains the shape of the cell, anchors organelles, and controls internal movement of structures, e.g., transport vesicles . As the concentration of soluble molecules increases within the cytosol, an osmotic gradient builds up toward the outside of the cell. Water ...

Endomembrane system

... They utilize enzymes to break down macromolecules and also act as a waste disposal system. Vacuoles act as storage units in some cells. vesicles are small membrane-enclosed transport units that can transfer molecules between different compartments. ...

Cell membrane

... the opposite direction). See also: active transport . Examples include: endocytosis exocytosis , in which molecules packaged in membrane vesicles are either imported or exported, respectively. Molecular exchangers , transporters and pumps represent other examples. References R.R. ...

Insulin

... into the cells An increased calcium level in the cells causes release of previously synthetised insulin, which has been stored in secretory vesicles The calcium level also regulates expression of the insulin gene via the calcium responsive element binding protein ( CREB ). This is the ...

Origin of life

... replication. One of the earliest incarnations of this idea was put forward in 1924 with Alexander Oparin 's notion of primitive self-replicating vesicles which predated the discovery of the structure of DNA. More recent variants in the 1980s and 1990s include Gnter Wchtershuser 's iron-sulfur ...

Phospholipid

... forms a membrane with hydrophilic heads on both sides extending out into the water. This allows it spontaneously to form liposomes , or small lipid vesicles , which can then be used to transport materials into living organisms and study diffusion rates into or out of a cell membrane. This membrane is ...

Lipid bilayer

... freely. Other self-organizing structures that lipids assume, depending on their concentration and type, include micelles , monolayers and vesicles . Cholesterol molecules in the bilayer assist in regulating fluidity. See also phospholipid OTG ...

Cell membrane

... the opposite direction). See also: active transport . Examples include: endocytosis exocytosis , in which molecules packaged in membrane vesicles are either imported or exported, respectively. Molecular exchangers , transporters and pumps represent other examples. References R.R. ...

Semen

... of semen.This fluid is contributed by the accessory male reproductive organs . Some 60% of the volume of ejaculate is produced by the seminal vesicles , and most of the remainder is generated by the prostate . A small amount of viscous mucus secreted by the bulbourethral glands contributes to ...
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