hydrophobicity biology definition
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Cell Biology/Membranes/Hydrophobicity Cell Biology/Membranes/Hydrophobicity. Hydrophobicity literally means fear of water. The opposite of this is hydrophilicity which means love of water. These two terms denote the properties of molecules or parts of molecules to bond with water (hydrophilicity) or reject water (hydrophobicity). This effect is seen when one puts a drop of oil on water.
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Phospholipid Phospholipids are a class of lipids that are a major component of all cell membranes. They can form lipid bilayers because of their amphiphilic characteristic. The structure of the phospholipid molecule generally consists of two hydrophobic fatty acid tails and a hydrophilic head consisting of a phosphate group.The two components are joined together by a glycerol molecule. The phosphate groups can be modified with simple organic molecules such as choline.hey can form lipid bilayers because of their amphiphilic characteristic. The structure of the phospholipid molecule generally consists of two hydrophobic fatty acid tails and a hydrophilic head consisting of a phosphate group. The two components are joined together by a glycerol molecule.
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- Structure and Function Relationships of Proteins. The three-dimensional structure of a protein defines not only its size and shape, but also its function. One characteristic that affects function is the hydrophobicity of a protein, which is determined by the primary and secondary structure. For example, let's look at membrane proteins.
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Directionality (molecular biology) Directionality (molecular biology) A furanose (sugar-ring) molecule with carbon atoms labeled using standard notation. The 5′ is upstream; the 3′ is downstream. DNA and RNA are synthesized in the 5′ to 3′ direction. Directionality, in molecular biology and biochemistry, is the end-to-end chemical orientation of a single strand of nucleic acid.
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- Looking for online definition of robotic in the Medical Dictionary? robotic explanation free. What is robotic? Meaning of robotic medical term. What does robotic mean?
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- The cell membrane is composed mainly of phospholipids, which consist of a hydrophobic (or “water-fearing”) tail and a hydrophilic (or “water-loving”) head group.
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- The lipid bilayer is the main fabric of the membrane, and its structure creates a semi-permeable membrane. The hydrophobic core impedes the diffusion of hydrophilic structures, such as ions and polar molecules but allows hydrophobic molecules, which can dissolve in the membrane, to cross it with ease.he cell is composed of two distinctive environments: the hydrophilic aqueous cytoplasm and the hydrophobic lipid membranes. The lipid environment is defined by the family of molecules that are characterized by their hydrophobic nature and their common metabolic origin.
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Lipid Bilayer: Definition, Structure & Function Phospholipids are the primary molecules found in the plasma membrane. A phospholipid is unique in that it has a hydrophilic region called the head, and a hydrophobic region known as the tail. The hydrophilic region can interact with water due to the presence of a phosphate group which is polar, like water.If something is hydrophilic, that means it likes water.he lipid bilayer is arranged in two layers of phospholipids, with the hydrophilic heads forming the outer edges and the tails forming the interior.
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osmosis Physical Chemistry, Cell Biology. the tendency of a fluid, usually water, to pass through a semipermeable membrane into a solution where the solvent concentration is higher, thus equalizing the concentrations of materials on either side of the membrane.
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phospholipid Phospholipids are amphipathic in nature; that is, each molecule consists of a hydrophilic (water-loving) portion and a hydrophobic (water-hating) portion. Due to the amphipathic nature and insolubility in water, phospholipids are ideal compounds for forming the biological membrane. See Lipid.fŏs'fōlĭp`ĭd) , lipid lipids,a broad class of organic products found in living systems. Most are insoluble in water but soluble in nonpolar solvents. The definition excludes the mineral oils and other petroleum products obtained from fossil material......
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What is Hydrophobic? - Definition & Interactions (Think of how salt dissolves in water. This is due to the charges of the ions sodium and chlorine.). So essentially, hydrophobic molecules are molecules that do not have a charge. By lacking a charge, these molecules do not have any charge-to-charge interactions that will allow them to interact with water.his is because the applied wax is hydrophobic, and will not interact with water. Waxes, in this case, help to keep water away from the surface of the car. On the other hand, in many biological systems, waxes may be used for other means.
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Quick Questions Chapter 5 Which of the following would be the most hydrophobic molecule? a. Cholesterol b. Nucleotide c. Amino Acid d. Chitin e. Glucose
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- Lipids are hydrophobic or ambiphilic small molecules. In water, hydrophobic lipids such as oils and fats clump up and separate from the water. In water, ambiphilic lipids suc…h as phospholipids form bilayer structures; the body of living creatures uses these bilayer structures to form cell membranes and vesicles.
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- Physical Chemistry, Cell Biology. 1  the tendency of a fluid, usually water, to pass through a semipermeable membrane into a solution where the solvent concentration is higher, thus equalizing the concentrations of materials on either side of the membrane.  the diffusion of fluids through membranes or porous partitions.
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What Functions Do Phospholipids Have in Cells? Phospholipids are molecules containing a glycerol bound to two fatty acids and a phosphate group. They contain both hydrophillic (water-loving) and hydrophobic (water-fearing) parts. These are the hydrophillic head and the hydrophobic tail, respectively. Phospholipids are the major component of biological membranes of organisms. It is there where they form what is known as the lipid bilayer.
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HYDROPHOBIA The noun HYDROPHOBIA has 3 senses: 1. a symptom of rabies in humans consisting of an aversion to swallowing liquids. 2. a morbid fear of water. 3. an acute viral disease of the nervous system of warm-blooded animals (usually transmitted by the bite of a rabid animal); rabies is fatal if the virus reaches the brain. Familiarity information: HYDROPHOBIA used as a noun is uncommon. Dictionary entry details. • HYDROPHOBIA (noun).
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- Hydrocarbon molecules are strongly hydrophobic (water fearing), and it is this strongly hydrophobic layer of material that gives the cell membrane its water proof nature and allows it to act as a container for the cell and its contents.
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Lipophilic and hydrophilic? Hydrophilic (Water loving) compound are polar in nature. They will tend to have a function group that causes an uneven electron density and hence makes it have a dipole movement. Lipophilic, (fat loving) compounds are non-polar in nature. They will tend to have long hydrocarbon chains.
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What Is a Hydrophobic Molecule? A hydrophobic molecule is a molecule that won't combine with water. The word hydrophobic describes this water-repelling characteristic; hydro means water in Greek, and phobic derives from phobos, which means fearing.. Though these molecules don't literally fear water, they do not mix with water molecules.
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Biology I Chapter 5 Membranes Biology I Chapter 5 Membranes. Biology I Chapter 5 Membranes LearnSmart 1. The lipid bilayer of cell membranes acts as a barrier to the free movement of substances that are o Hydrophilic o Water soluble 2. True or False: In order to survive, grow and reproduce, a cell must continually exchange materials and information with its environment.
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Shared Flashcard Set Definition. It affects the polarity, and thus the solubility of an amino acid in water.Nonpolar side chains lack charged or highly electronegative atoms capable of forming hydrogen bonds with water. These R-groups are hydrophobic, meaning that they do not interact with water. Instead of dissolving, hydrophobic side chains tend to coalesce in aqueous solution. Polar or charged side chains interact readily with water and are hydrophilic. Hydrophilic side chains dissolve in water easily.
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hydrophilic Adj. 1. hydrophobic-lacking affinity for water; tending to repel and not absorb water; tending not to dissolve in or mix with or be wetted by water. chemical science, chemistry-the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions.
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- Hydrophobic; describing molecules or groups that are poorly soluble in water. These molecules would be composed either of elements having nonpolar covalent bonds or polar covalent bonds that cancel each other out.A B C D E F G H I J K L M N O P Q R S T U V W X Y Z.ydrophobic; describing molecules or groups that are poorly soluble in water. These molecules would be composed either of elements having nonpolar covalent bonds or polar covalent bonds that cancel each other out. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z.
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- Less hydrophobic amino acids, or indifferent amino acids: Amino acids that are part hydrophobic (i.e. the part of the side-chain nearest to the protein main-chain): Hydrophobic amino acids are those with side-chains that do not like to reside in an aqueous (i.e. water) environment.
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What is the difference between Hydrophobic and Hydrophilic? This is a body of water Hydrophobic and Hydrophilic have a lot to do with water. Like hydrophobic means “water repelling” and hydrophilic means “water loving”! ‘Hydro’ means water! Time for water! Water is lighter when it is a solid and heavier when it is a liquid! That is very rare.
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- Polarity. Definition. noun. (1) The presence of or having distinct and opposite poles. (2) The condition of having contrasting properties or direction. (3) (chemistry) The tendency of forming distinctive opposing charges based on the orientation of chemical bonds and spatial structure of the molecule. Supplement.olarity enables water to interact with various compounds. (Biology) Polarity is also an essential and common feature in organisms, particularly at the cell level. Examples of polarity manifested in a cell or group of cells are as follows: 1  polarity inside a dividing cell (during cell division).