Hydrophobic definition, of or relating to hydrophobia. The following article is from The Great Soviet Encyclopedia (1979). The misleading alternative term "hydrophobic bond" is discouraged. It might be outdated or ideologically biased. 1. Hydrogen bond definition is - an electrostatic attraction between a hydrogen atom in one polar molecule (as of water) and a small electronegative atom (as of oxygen, nitrogen, or fluorine) in usually another molecule of the same or a different polar substance. [adj] Medical Definition of Hydrophobic. When the phospholipid molecules are joined by other lipids and integral proteins, the surface can function as a cellular … Repelling, tending not to combine with, or incapable of dissolving in water. Ionic bond definition, the electrostatic bond between two ions formed through the transfer of one or more electrons. The energetics of hydrophobic bond formation drives amino acids with hydrophobic sidechains into the interior of proteins, in most cases; this is a very important component of proper protein folding. Hydrophobic Interactions. There is no such thing as a hydrophobic bond, It is a hydrophobic force. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008) Lexicographical Neighbors of Hydrophobic Definition of Hydrophobic. water, nonpolar molecules bond weakly with each other. The hydrophobic part of the solvent-accessible surface of a typical monomeric globular protein consists of a single, large interconnected region formed from faces of apolar atoms and constituting approximately 60% of the solvent-accessible surface area. A hydrogen bond is a type of attractive (dipole-dipole) interaction between an electronegative atom and a hydrogen atom bonded to another electronegative atom. A hydrophilic molecule or substance is attracted to water. In the presence of polar molecules, espec. How to use hydrophobic in a sentence. Hydrophobic interaction synonyms, Hydrophobic interaction pronunciation, Hydrophobic interaction translation, English dictionary definition of Hydrophobic interaction. Learn more about ionic bonds in this article. Examples of hydrophobic molecules include the alkanes, oils, fats, … Ionic bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound. Nonpolar molecules that repel the water molecules are said to be hydrophobic; molecules forming ionic or a hydrogen bond with the water molecule are said to be hydrophilic. The molecule increasingly becomes overall more nonpolar and therefore less soluble in the polar water as the carbon chain becomes longer. Hydrophobic coatings can be easily applied over any substrate such as glass, metal, wood, and plastic irrespective of its composition and can also be applied to complex geometries. hydrophobic synonyms, hydrophobic pronunciation, hydrophobic translation, English dictionary definition of hydrophobic. adj. 1. The term hydrophobicity was derived from two Greek words that are hydro that means water and phobos that means fear; thus, hydrophobic surfaces can be define as material that tend to repel with water. losing a water in order to form a bond; used with sugars, nucleic acids, & amino acid -> puts them together; A chemical reaction in which two molecules covalently bond to each other with the removal of a … Because the micelles are suspended in water, the fat is mobilized from the surface of the object being cleaned. The hydrophobic effect is the tendency of non-polar substances to mass together in an aquatic solution and exclude water molecules. Hydrogen bonds can occur between molecules or within parts of a single molecule. Hydrophobic surface is a surface that has the ability to repel water [1]. 2. rabid . The enthalpy change in Fig. The hydrophobic effect is the tendency of non-polar molecules and molecular segments in an aqueous solution to avoid the contact with water molecules [225]. Hydrophilic Definition. hydrophobic Water-fearing.Term applied to nonpolar molecules that cannot bond with water. Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom. Search the Dictionary for More Terms. Definition of hydrophobic interaction. Hydrophobic Effect. Hydrophobic molecules tend to be nonpolar and, thus, prefer other neutral molecules and nonpolar solvents.Because water molecules are polar, hydrophobes do not dissolve well among them. Then the tubes were added to 5 mL of four chemical solutions: solution A (SA) 0.05 M NaCl; solution B (SB) 0.6 M NaCl; solution C (SC) 1.5 M urea+0.6 M NaCl; solution D (SD) 8.0 M urea+0.6 M NaCl, which disrupted some bond types including ionic bonding, hydrogen bonding and hydrophobic interactions.Proteins were partially solubilized in these solutions to measure the existence of ionic … Related terms: Hydrogen; Hydrocarbon; Protein; Ligand; Surfactant; Ion; Solubility; Micelle; Solute; Hydrogen Bond Therefore, the direct delineation of the hydro … from X-ray crystallography or NMR) are scarce and can not distinguish between various existing models of hydrophobic effect. All of the other answers use lots of words but no pictures. Currently experimental data (e.g. Hydrophobic molecules in water often cluster together, forming micelles.Water on hydrophobic surfaces will exhibit a high contact angle.. This property of water was important for the evolution of life. Oxygen, as an electronegative atom, draws the electrons of each bond closer to its core, thus creating a more negative charge. However, the entropy change associated with the order around the solute still dominates the process. Definition of Hydrophobic bond with photos and pictures, translations, sample usage, and additional links for more information. Hydrophobic Coatings thin layers of a waterproof substance on the surface of hydrophilic materials. As chemical bond like hydrogen bond is broken down in this reaction and releases energy, so it is considered as an endothermic reaction, and this whole process causes the entropy of the system to decrease. adj. Hydrophobic exclusion describes the tendency, for example, of multiple oil droplets in water to coalesce into fewer, larger droplets. This is driven by the tendency for water molecules to "want" to hydrogen bond in combination with an inability to do so with these hydrophobic substances. A bilayer of phospholipid molecules forms a plasma membrane.. Phospholipid Definition. permit's take a closer have a look at that definition. An ester linkage is a covalent bond between a carboxylic acid and an alcohol. hydrophytic leaves The leaves of plant s that grow in water or under conditions of … See more. Definition of Hydrophobic. A phospholipid is an amphiphilic molecule consisting of a polar head region, a unit of glycerol, and two or more non-polar fatty acid tails, typically found in a cell membrane. Define hydrophobic. The phrase hydrophobic describes that fact that nonpolar materials don't integrate with water molecules. Hydroxyl groups (-OH), found in alcohols, are polar and therefore hydrophilic (water liking) but their carbon chain portion is non-polar which make them hydrophobic. These forces come about when two areas of 2 different molecules containing hydrophobic sections come close together. Hydrogen Bond Definition . 4 is negative as the distortion of hydrogen bond network near the folded protein becomes less severe. You may wonder about the effects of polar amino acids on H 2 O lattices. Hydrophobic Coatings - Paint Protection - the Next Generation Oxygen, as an electronegative atom, draws the electrons of each bond closer to its core, thus creating a more negative charge. hydrophobic: [ hi″dro-fo´bik ] 1. repelling water; insoluble in water; not readily absorbing water. This bond always involves a hydrogen atom. Definition of Hydrophobic. Water is a polar molecule that acts as a solvent, dissolving other polar and hydrophilic substances.In biology, many substances are hydrophilic, which allows them to be dispersed throughout a cell or organism.All cells use water as a solvent that creates the solution known as cytosol. 1. This is not a separate bonding force; rather, it is the result of the energy required to insert a nonpolar molecule into water. From: The Journal of Supercritical Fluids, 2007. The tendency of nonpolar molecules in a polar solvent (usually water) to interact with one another is called the hydrophobic effect.The interactions between the nonpolar molecules are called hydrophobic interactions.The relative hydrophobicity of amino acid residues is defined by a system known as hydrophobicity scales.. General Information [] Repelling, tending not to combine with, or incapable of dissolving in water. The force that causes hydrophobic molecules or nonpolar portions of molecules to aggregate together rather than to dissolve in water is called the hydrophobic bond. I thought I’d do the opposite, using as many pictures as possible to explain hydrophilic, hydrophobic, ultrahydrophobic, ultrahydrophilic, and amphipathic. Soap micelles mobilize fats and other hydrophobic substances by dissolving them in the interior of the micelle. See more. 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