The Replication Of Deoxyribonucleic Acid ( Rna ) And Ribonucleic Acid

824 Words Apr 22nd, 2016 4 Pages
The Replication of Deoxyribonucleic Acid (DNA) and Ribonucleic Acid (RNA)

DNA replication is when a cell divides and every new cell has a copy of the original cell’s genetic information. This allows it to synthesize the proteins to build cellular parts and metabolize. Replication of DNA happens during the interphase of a cell cycle. What makes the replication possible is the double-stranded structure of the DNA. During the phase of copying, hydrogen bonds between compatible base pairs in each DNA molecule break. Then the double helix disentangles and pulls apart, revealing the nitrogenous bases. After, DNA polymerase brings new nucleotides, and they form compatible pairs with the exposed bases. The other enzymes unify the sugar-phosphate backbone. A new strand of complementary nucleotides forms beside each old strand. The result is two complete DNA molecules with one new strand and one old strand from the original molecule. DNA gives the genetic instructions that are required by a cell to synthesize proteins. Making proteins takes various steps and is an enzyme-catalyzed process. Cells are able to synthesize proteins because it is given a specific sequence of nucleotide bases in the DNA of genes and a distinct sequence of amino acid in a protein molecule. The building block sequence is called the genetic code. Expressed in a DNA molecule by a specific sequence of three nucleotides are the twenty types of amino acids in an organic protein. The sequences…

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