About DNA
1 nucleic acids
2 DNA the DNA
2.1 mechanism of DNA doubling
2.2 Terms doubling of the DNA molecule
2.3 the process of doubling the steps DNA
2.4 The difference between DNA and RNA
Nucleic acids
Know nucleic acids as a set of basic small molecules of so-called nucleotides, which in turn can enter in the installation of large particles and be the single sugar molecules and Esther consecutive phosphoric acid in a series of Aterpt each molecule of sugar in a nuclear rules that make billions of them billions of Alnyukluotdiat arising It is compact in the installation of a spiral called a double (DNA).
DNA the DNA
The word (DNA) is an abbreviation of Homs Alnwori RNA Menksos oxygen consists of two chains of nucleotides, which Tltephan around each other on a spiral shape and be in one of the chains nitrogenous base called (adenine) is associated with another base called (thymine) in the other series so that the links between rules hydrogen and number two third rule, called (guanine) those associated with Alsaitosin three hydrogen bonds do not enter the base uracil hydrogen in the synthesis of DNA (DNA), but interference in the synthesis of DNA (RNA).
Mechanism of DNA replication
Dependent living cells the ability of the province to continue to carry out their functions on a high degree of accuracy from one generation to another, and on its ability to double the existing and stored in a molecule of genetic information (DNA) which is a chromosome and have it during interphase before the division process in order to produce cells New.
Terms doubling of the DNA molecule
That carries the molecule (DNA), which need to be doubled the same genetic information.
The existence of sufficient quantities of the four different nucleotides within the composition.
The presence of an enzyme known as replication (polymerase enzyme) along with some enzymes and other proteins that are required to complete the process.
The process of DNA replication steps
Separation of molecule chains (DNA) from each other due to gradually break the hydrogen bonds that bind nitrogenous bases with one converted into a group of single chains from a certain point and be Alanchatr longitudinally to the end of the series.
Enzyme multiplication with single chain link by placing nucleotides tidily depending on the order of nitrogenous bases.
Doubled two strings at the same time and at the same speed to produce two molecules full of (DNA) so that each contain the first two series old and new second.
Original and new histones correlation with molecular (DNA) to form chromosomes to be intensified in the nucleus.
The difference between DNA and RNA
DNA (DNA): consists of sugar Raabouzay Menksos oxygen contains the base thymine nitrogen and tape be twofold.
DNA (RNA): consists of sugar Raabouzay undiminished oxygen contains the base uracil nitrogen instead of thymine and be a single tape.
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