|
Heterolytic Pathway
Heterolysis may refer to: * Heterolysis (biology), the apoptosis induced by hydrolytic enzymes from surrounding cells * Heterolysis (chemistry) In chemistry, heterolysis or heterolytic fission () is the process of cleaving/breaking a covalent bond where one previously bonded species takes both original bonding electrons from the other species. During heterolytic bond cleavage of a neutra ..., a chemical bond cleavage of a neutral molecule generating a cation and an anion See also * Homolysis (other) Science disambiguation pages {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterolysis (biology)
Heterolysis (hetero = other/different, lysis = cell breakdown) is the spontaneous death and disintegration of a cell from factors other than itself. In contrast, autolysis happens when a cell dies due to its own secretions or signaling. Some external factors that cause heterolysis are hypoxia, biological factors, chemical agents like drugs or free radical reactions, physical factors like electric shock, trauma, extreme radiation, and immunological reactions such as inflammation or allergic reactions. Such extrinsic cell death is important in executing proper immune response functions. This is commonly seen when a bacterial or viral infection occurs and the pathogen In biology, a pathogen (, "suffering", "passion" and , "producer of"), in the oldest and broadest sense, is any organism or agent that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a Germ theory of d ... forces the cell to stop apoptosis to avoid death of host cells. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterolysis (chemistry)
In chemistry, heterolysis or heterolytic fission () is the process of cleaving/breaking a covalent bond where one previously bonded species takes both original bonding electrons from the other species. During heterolytic bond cleavage of a neutral molecule, a cation and an anion will be generated. Most commonly the more electronegative atom keeps the pair of electrons becoming anionic while the more electropositive atom becomes cationic. : Heterolytic fission almost always happens to single bonds; the process usually produces two fragment species. The energy required to break the bond is called the heterolytic bond dissociation energy, which is similar (but not equivalent) to homolytic bond dissociation energy commonly used to represent the energy value of a bond. One example of the differences in the energies is the energy required to break a bond : History The discovery and categorization of heterolytic bond fission was clearly dependent on the discovery and categoriza ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homolysis (other)
The term homolysis generally means breakdown (''lysis'') to equal pieces (''homo'' = same). There are separate meanings for the word in chemistry and biology: * Homolysis (biology), the fact that the dividing cell gives two equal-size daughter cells * Homolysis (chemistry), a chemical bond dissociation of a neutral molecule generating two free radicals See also * Heterolysis (other) Science disambiguation pages {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |