Plasma

plasma membrane
living, semipermeable membrane covering certain cells; see cell membrane
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
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Plasma resembles whey in appearance (transparent with a faint straw colour). It is mainly composed of water, proteins, and mineral salts. It serves as transport medium for glucose, lipids, hormones, products of metabolism, carbon dioxide and oxygen.
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The inner leaflet of a typical mammalian plasma membrane contains 20-30% univalent PS (phosphatidylserine) and ~1% multivalent PtdIns(4,5)P2. Numerous proteins have clusters of basic (or basic/hydrophobic) residues that bind to these acidic lipids.
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Plasma is the straw-colored liquid in which the blood cells are suspended.
Composition of blood plasma ComponentPercent
Water ...
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Plasma Membrane
The plasma membrane surrounds the cell and functions as an interface between the living interior of the cell and the nonliving exterior.
All cells have one.
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Plasma B cells secrete antibodies which affect the destruction of antigens by binding to them and making them easier targets for phagocytes (a process known as opsonization).
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plasma membrane -- Outer membrane of a cell, sometimes called the cell membrane. The term plasma membrane is used more frequently when discussing prokaryotes.
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plasma cells: large antibody-producing cells derived from B lymphocytes when stimulated.
plasma membrane: also called a cell membrane; a membrane composed of lipids, proteins, and phospholipids.
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plasma membrane
[Gk. plasma, form or mold + L. membrana, skin, parchment]
The membrane at the boundary of every cell that acts as a selective barrier, thereby regulating the cell's chemical composition.
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Plasma is the liquid component of the blood. Mammalian blood consists of a liquid (plasma) and a number of cellular and cell fragment components. Plasma is about 60 % of a volume of blood; cells and fragments are 40%.
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plasma membrane - encloses the cell, defines its boundaries, and maintains the essential differences between the cytosol and the extracellular environment ...
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plasma cell A mature, differentiated B lymphocyte chiefly occupied with antibody synthesis and secretion; a plasma cell lives for only five to seven days.
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plasma membrane
The outer boundary of cells which is only visible with an electron microscope.
plasmalemma
the cell membrane that also lines the connecting plamsodesmata between living cells.
Covered in Lab 3 Cell Biology ...
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Mycoplasma genitalium genome. Claire Fraser (TIGR) and collaborators report the complete sequencing of the bacterium with the smallest known genome of any self-replicating organism in "The Minimal Gene Complement of Mycoplasma genitalium.
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mycoplasma. A member of the genus Mycoplasma. Mycoplasmas, unlike viruses, can reproduce in the absence of a host and are the smallest free-living organisms; they have a unit membrane but no cell wall as do bacteria.
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The fraction of plasma lipoprotein cholesterol component with most density (relative weight).
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chemiosmotic coupling Coupling of ATP synthesis to electron transfer via an electrochemical pH gradient across a membrane (inner mitochondrial membrane, bacterial plasma membrane, or thylakoid membrane).
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Cytoplasm - collective term for cytosol and all the organelles contained in it (outside the nucleus and within the plasma membrane) ...
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Plasminogen activator inhibitor-1 (PAI-1) plasma levels have been consistently related to a polymorphism (4G/5G) of the PAI-1 gene. The renin-angiotensin pathway plays a role in the regulation of PAI-1 plasma levels.
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Because, as you might imagine, a vesicle swimming up against a plasma membrane, it doesn't just fuse. It's very difficult for that to happen. So it has to assemble a whole bunch of macromolecules at that spot.
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Monatomic fluorine is used for plasma ashing in semiconductor manufacturing.
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If there is not enough MTHFR activity, plasma homocysteine levels may rise, which in turn increases the risk of cerebrovascular, peripheral vascular, and coronary heart disease, as well as up to a ten-fold increase in the risk for venous thrombosis.
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Hybridoma: A clone of plasmacytoma cells which secrete a monoclonal antibody; usually produced by fusion of peripheral or splenic plasma cells taken from an immunized mouse with an immortalized murine plasmacytoma cell line (fusion partner), ...
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Substance contained within the plasma membrane excluding, in eukaryotes, the nucleus.
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cortical granules/vesicles - membrane-bound structures in the egg, derived from the Golgi apparatus, and found just beneath the plasma membrane.
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kytos - a hollow vessel, now often taken to mean a cell; Gr. plasma - anything formed or moulded].
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Edema accumulation of unreturned blood plasma in various body tissues/organs
(edema = tumor swelling)
Ejaculation expulsion of semen
(e- = out without from; jacul = throw) ...
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Bacteria, such as Salmonella typhimurium, also switch surface antigens by DNA rearrangements.
A variety of mechanisms result in variation of surface antigens of mycoplasma.
The VSG rearrangement is but one example of programmed rearrangement.
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Their antigen receptors are surface immunoglobulins (antibodies). They recognize peptides directly and secrete antibodies by differentiating into plasma cells. They also exist as long-lived memory cells.
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Sickle cell anemia -- an hereditary, chronic form of hemolytic anemia characterized by breakdown of the red blood cells; red blood cells undergo a reversible alteration in shape when the oxygen tension of the plasma falls slightly and a sickle-like ...
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