Biological membrane

membranemembranesbiological membranesmembranousmembrane-boundbiomembranebiomembranesbio-membranesbiologicalcell membrane
A biological membrane or biomembrane is an enclosing or separating membrane that acts as a selectively permeable barrier within living things.wikipedia
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Semipermeable membrane

permeabilitysemi-permeable membranesemipermeable
A biological membrane or biomembrane is an enclosing or separating membrane that acts as a selectively permeable barrier within living things.
A semipermeable membrane is a type of biological or synthetic, polymeric membrane that will allow certain molecules or ions to pass through it by diffusion—or occasionally by more specialized processes of facilitated diffusion, passive transport or active transport.

Eukaryote

eukaryoticeukaryotesEukaryota
Biological membranes, in the form of eukaryotic cell membranes, consist of a phospholipid bilayer with embedded, integral and peripheral proteins used in communication and transportation of chemicals and ions.
Eukaryotes are organisms whose cells have a nucleus enclosed within membranes, unlike prokaryotes (Bacteria and Archaea).

Membrane

membranesmembranousBiomembrane
A biological membrane or biomembrane is an enclosing or separating membrane that acts as a selectively permeable barrier within living things.
Biological membranes include cell membranes (outer coverings of cells or organelles that allow passage of certain constituents); nuclear membranes, which cover a cell nucleus; and tissue membranes, such as mucosae and serosae.

Cell membrane

plasma membranemembranecell membranes
Biological membranes, in the form of eukaryotic cell membranes, consist of a phospholipid bilayer with embedded, integral and peripheral proteins used in communication and transportation of chemicals and ions.
The cell membrane (also known as the plasma membrane (PM) or cytoplasmic membrane, and historically referred to as the plasmalemma) is a biological membrane that separates the interior of all cells from the outside environment (the extracellular space) which protects the cell from its environment consisting of a lipid bilayer with embedded proteins.

Peripheral membrane protein

peripheralperipheral membraneperipheral proteins
Biological membranes, in the form of eukaryotic cell membranes, consist of a phospholipid bilayer with embedded, integral and peripheral proteins used in communication and transportation of chemicals and ions.
Peripheral membrane proteins are membrane proteins that adhere only temporarily to the biological membrane with which they are associated.

Lipid bilayer

phospholipid bilayerlipid membranelipid bilayers
Biological membranes, in the form of eukaryotic cell membranes, consist of a phospholipid bilayer with embedded, integral and peripheral proteins used in communication and transportation of chemicals and ions. Proteins are adapted to high membrane fluidity environment of lipid bilayer with the presence of an annular lipid shell, consisting of lipid molecules bound tightly to surface of integral membrane proteins.
The cell membranes of almost all organisms and many viruses are made of a lipid bilayer, as are the nuclear membrane surrounding the cell nucleus, and other membranes surrounding sub-cellular structures.

Integral membrane protein

integral membrane proteinsintegralintegral protein
Biological membranes, in the form of eukaryotic cell membranes, consist of a phospholipid bilayer with embedded, integral and peripheral proteins used in communication and transportation of chemicals and ions. Proteins are adapted to high membrane fluidity environment of lipid bilayer with the presence of an annular lipid shell, consisting of lipid molecules bound tightly to surface of integral membrane proteins.
An integral membrane protein (IMP) is a type of membrane protein that is permanently attached to the biological membrane.

Mucous membrane

mucosamucous membranesmucosal
The cell membranes are different from the isolating tissues formed by layers of cells, such as mucous membranes, basement membranes, and serous membranes.
A mucous membrane or mucosa is a membrane that lines various cavities in the body and covers the surface of internal organs.

Lipid

lipidsglycerolipidfat
The bulk of lipid in a cell membrane provides a fluid matrix for proteins to rotate and laterally diffuse for physiological functioning.
Examples of glycerophospholipids found in biological membranes are phosphatidylcholine (also known as PC, GPCho or lecithin), phosphatidylethanolamine (PE or GPEtn) and phosphatidylserine (PS or GPSer).

Membrane protein

membrane proteinsmembrane-bound proteinmembrane-bound proteins
These membrane protein s have various functions and characteristics and catalyze different chemical reactions.
Membrane proteins are proteins that interact with, or are part of, biological membranes.

Membrane fluidity

fluiditymembrane composition and functionmembranes' fluidity
Proteins are adapted to high membrane fluidity environment of lipid bilayer with the presence of an annular lipid shell, consisting of lipid molecules bound tightly to surface of integral membrane proteins.
Also, a narrow annular lipid shell of membrane lipids in contact with integral membrane proteins have low fluidity compared to bulk lipids in biological membranes, as these lipid molecules stay stuck to surface of the protein macromolecules.

Cell (biology)

cellcellscellular
In particular, a different mechanism operates for glycolipids—the lipids that show the most striking and consistent asymmetric distribution in animal cells.
The cell membrane, or plasma membrane, is a biological membrane that surrounds the cytoplasm of a cell.

Osmosis

osmoticosmoticallyosmotic gradient
Osmosis
Osmosis is a vital process in biological systems, as biological membranes are semipermeable.

Membrane biology

membrane biophysicsmembranemembrane physiology
Membrane biology
Membrane biology is the study of the biological and physiochemical characteristics of membranes, with applications in the study of cellular physiology.

Lipid bilayer phase behavior

packing behaviorphase separationflip-flop behavior
The interactions of lipids, especially the hydrophobic tails, determine the lipid bilayer physical properties such as fluidity.
Phase transition temperature of liposomes and biological membranes can be measured using calorimetry, magnetic resonance spectroscopy and other techniques.

Organism

organismsflora and faunaliving organisms
A biological membrane or biomembrane is an enclosing or separating membrane that acts as a selectively permeable barrier within living things.

Ion

cationanionions
Biological membranes, in the form of eukaryotic cell membranes, consist of a phospholipid bilayer with embedded, integral and peripheral proteins used in communication and transportation of chemicals and ions.

Protein

proteinsprotein synthesisproteinaceous
The bulk of lipid in a cell membrane provides a fluid matrix for proteins to rotate and laterally diffuse for physiological functioning.

Annular lipid shell

annular lipids
Proteins are adapted to high membrane fluidity environment of lipid bilayer with the presence of an annular lipid shell, consisting of lipid molecules bound tightly to surface of integral membrane proteins.

Basement membrane

basement membranesbasement membrane zonecapillary basement membranes
The cell membranes are different from the isolating tissues formed by layers of cells, such as mucous membranes, basement membranes, and serous membranes.

Serous membrane

serosaserosalserous
The cell membranes are different from the isolating tissues formed by layers of cells, such as mucous membranes, basement membranes, and serous membranes.

Membrane models

membrane modelTrilaminar Model
As seen in the fluid membrane model of the phospholipid bilayer, the outer leaflet and inner leaflet of the membrane are asymmetrical in their composition.

Substrate (chemistry)

substratessubstrateenzyme substrate
These enzymes, which use free fatty acids as substrates, deposit all newly made phospholipids into the cytosolic half of the bilayer.

Flippase

floppaseflip-flopphospholipid asymmetry
This transfer is catalyzed by enzymes called flippases.

Na+/K+-ATPase

Na + /K + -ATPasesodium-potassium pumpNa + /K + ATPase