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Homolysis (chemistry), Homolytic Fission
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) 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 b ... Science disambiguation pages {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homolysis (biology)
Cell division is the process by which a parent cell divides into two daughter cells. Cell division usually occurs as part of a larger cell cycle in which the cell grows and replicates its chromosome(s) before dividing. In eukaryotes, there are two distinct types of cell division: a vegetative division (mitosis), producing daughter cells genetically identical to the parent cell, and a cell division that produces haploid gametes for sexual reproduction (meiosis), reducing the number of chromosomes from two of each type in the diploid parent cell to one of each type in the daughter cells. In cell biology, mitosis ( /maɪˈtoʊsɪs/) is a part of the cell cycle, in which, replicated chromosomes are separated into two new nuclei. Cell division gives rise to genetically identical cells in which the total number of chromosomes is maintained. In general, mitosis (division of the nucleus) is preceded by the S stage of interphase (during which the DNA replication occurs) and is often fol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homolysis (chemistry)
In chemistry, homolysis () or homolytic fission is the dissociation of a molecular bond by a process where each of the fragments (an atom or molecule) retains one of the originally bonded electrons. During homolytic fission of a neutral molecule with an even number of electrons, two free radicals will be generated. That is, the two electrons involved in the original bond are distributed between the two fragment species. Bond cleavage is also possible by a process called heterolysis. The energy involved in this process is called bond dissociation energy (BDE). BDE is defined as the "enthalpy (per mole) required to break a given bond of some specific molecular entity by homolysis," symbolized as ''D''. BDE is dependent on the strength of the bond, which is determined by factors relating to the stability of the resulting radical species. Because of the relatively high energy required to break bonds in this manner, homolysis occurs primarily under certain circumstances: * Light ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterolysis (other)
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] |
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