File Name: dna and rna structure .zip
This page, looking at the structure of DNA, is the first in a sequence of pages leading on to how DNA replicates makes copies of itself, and then to how information stored in DNA is used to make protein molecules.
Deoxyribonucleic acid, or DNA, is a molecule that contains the instructions an organism needs to develop, live and reproduce. These instructions are found inside every cell, and are passed down from parents to their children.
Nucleic acid , naturally occurring chemical compound that is capable of being broken down to yield phosphoric acid , sugars, and a mixture of organic bases purines and pyrimidines. Nucleic acids are the main information-carrying molecules of the cell , and, by directing the process of protein synthesis , they determine the inherited characteristics of every living thing. DNA is the master blueprint for life and constitutes the genetic material in all free-living organisms and most viruses. RNA is the genetic material of certain viruses, but it is also found in all living cells, where it plays an important role in certain processes such as the making of proteins.
DNA, RNA, Protein, and Gene Expression
Components and structure of the nucleic acids. Polymerization occurs through the condensation of the phosphate on the 5' carbon and OH on the 3' carbon linkage. Eric Lander, Prof. Robert Weinberg, Dr. Claudette Gardel.
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Nucleic acids are the biopolymers , or large biomolecules , essential to all known forms of life. They are composed of nucleotides , which are the monomers made of three components: a 5-carbon sugar , a phosphate group and a nitrogenous base. If the sugar is a compound ribose , the polymer is RNA ribonucleic acid ; if the sugar is derived from ribose as deoxyribose , the polymer is DNA deoxyribonucleic acid. Nucleic acids are naturally occurring chemical compounds that serve as the primary information-carrying molecules in cells. They play an especially important role in directing protein synthesis. Nucleic acids are found in abundance in all living things, where they create, encode, and then store information of every living cell of every life-form on Earth. In turn, they function to transmit and express that information inside and outside the cell nucleus—to the interior operations of the cell and ultimately to the next generation of each living organism.
DNA structure and function
This is a comparison of the differences between DNA versus RNA, including a quick summary and a detailed table of the differences. This table summarizes the key points:. Also, RNA is found in prokaryotes , which are believed to precede eukaryotes. RNA on its own can act as a catalyst for certain chemical reactions.
Сьюзан высвободилась из рук обмякшего Хейла, не понимая, что произошло. Стратмор подхватил ее и слегка обнял, пытаясь успокоить. - Ш-ш-ш, - утешал он .
Она ударила его подушкой. - Рассказывай. Немедленно. Но Дэвид знал, что никогда ей этого не откроет.
Бедняга. Наверное, жена сказала ему не возвращаться домой. Я слышал, она его уже достала. Мидж задумалась.
Не имеет понятия. Рассказ канадца показался ему полным абсурдом, и он подумал, что старик еще не отошел от шока или страдает слабоумием. Тогда он посадил его на заднее сиденье своего мотоцикла, чтобы отвезти в гостиницу, где тот остановился.
К зарубежной агентурной сети.