Phospholipid in Biological Definition

Phospholipid

... as phosphoglycerides. There is only one type of phospholipid with a sphingosine backbone; sphingomyelin . ... Due to its polar nature, the head of a phospholipid is attracted to water (it is hydrophilic ). ... fluid properties, in which embedded proteins and phospholipid molecules are constantly moving laterally across ...

Cell membrane

... plasma membrane or plasmalemma ) is a thin and structured bilayer of phospholipid and protein molecules that envelopes the cell . It separates a ... organelles and other subcellular compartments. The foundation is a phospholipid bilayer , and the membrane as a whole is often described as a 'fluid ...

Hormone

... Sterol hormones such as calcitriol are a homologous system. Lipid and phospholipid hormones are derived from lipids such as linoleic acid and ... Vitamin D derivatives calcitriol Lipid and phospholipid hormones ( eicosanoids ): prostaglandins leukotrienes ...

Mitochondrion

... mitochondrial membranes The outer and inner membranes are composed of phospholipid bilayers studded with proteins , much like a typical cell membrane . ... more than 100 different polypeptides , and has a very high protein to phospholipid ratio (more than 3:1 by weight, which is about 1 protein for 15 ...

Mitochondrion

... mitochondrial membranes The outer and inner membranes are composed of phospholipid bilayers studded with proteins , much like a typical cell membrane . ... more than 100 different polypeptides , and has a very high protein to phospholipid ratio (more than 3:1 by weight, which is about 1 protein for 15 ...

Cell membrane

... plasma membrane or plasmalemma ) is a thin and structured bilayer of phospholipid and protein molecules that envelopes the cell . It separates a ... organelles and other subcellular compartments. The foundation is a phospholipid bilayer , and the membrane as a whole is often described as a 'fluid ...

Apoptosis

... Biochemical signals for safe disposal The dying cells that have just been described display "eat me" signals, like phosphatidylserine (PS, a phospholipid from the inner cell-membrane). Phagocytic scavengers, such as macrophages, have specialized receptors that recognize PS and carry out their disposal ...

Chloroplast membrane

... , vital for their function. Like mitochondria , chlorplasts have a double-membrane envelope, called the chloroplast envelope . Each membrane is a phospholipid bilayer , between 6 and 8 nm thick, and the two are separated by a gap of 10-20nm, called the intermembrane space. The outer membrane is permiable ...

Glycolipid

... in the cell surface membrane . The carbohydrates are found on the outer surface of all eukaryotic cell membranes. They extend from the phospholipid bilayer into the aqueous environment outside the cell where it acts as a recognition site for specific chemicals as well as helping to maintain the ...

Lipid

... Figure 1: Structure of a Lipid. Many lipids consists of a polar head group ( P ) and a nonpolar tail ( U for unpolar). The lipid shown is a phospholipid (two tails). The image on the left is a zoomed version of the more schematic image on the right, which will be used from now on to represent lipids ...

Lipid bilayer

... and type, include micelles , monolayers and vesicles . Cholesterol molecules in the bilayer assist in regulating fluidity. See also phospholipid OTG ...