Structure of dna dna has a double helix shape, which is like a ladder twisted into a spiral each step of the ladder is a pair of nucleotides nucleotides a nucleotide is a molecule made up of: deoxyribose, a kind of sugar with 5 carbon atoms, a phosphate group made of phosphorus. Dna is well-suited to perform this biological function because of its molecular structure, and because of the development of a series of high performance enzymes that are fine-tuned to interact with this molecular structure in specific ways. Rna structure and function ribonucleic acid (rna) also consists of nucleotides, but these nucleotides contain the sugar ribose rna has a,c,g and u although both rna and dna are nucleic acids, there are key differences in the structure and function of rna and dna.
Dna is a long molecule made up of units called nucleotides each nucleotide is made up of three basic components: a 5-carbon sugar called deoxyribose, a phosphate group, and a nitrogenous (nitrogen. Start studying structure & function of dna and rna learn vocabulary, terms, and more with flashcards, games, and other study tools. Dna is a double helix (think of a step-ladder and twist it along the long axis and you get a dna structure), while rna is more like a string of beads as for function dna is basically a string of genes and rna is what converts the information in the dna into proteins. The structure of dna (the double helix) dna is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine.
Eukaryotic chromosome structure the length of dna in the nucleus is far greater than the size of the compartment in which it is contained to fit into this compartment the dna has to be condensed in some manner. Describe the structure of dna 10254 views dna is the molecule within cells that contains genetic information, in the form of a sequence of bases that form a code that makes up a protein. The discovery in 1953 of the double helix, the twisted-ladder structure of deoxyribonucleic acid (dna), by james watson and francis crick marked a milestone in the history of science and gave rise to modern molecular biology, which is largely concerned with understanding how genes control the chemical processes within cells. The structure of dna dna (deoxyribonucleic acid) is composed of two polynucleotide strands (the polymers of nucleotides ), which form what looks like a ladder the nitrogenous bases in dna store the instructions for making polypeptide chains , essentially coding for every feature of the entire organism. Deoxyribonucleotide structure a the concept dna is a string of deoxyribonucleotides these consist of three different components these are the dexoyribose sugar, a phosphate group, and a nitrogen basevariation in the nitrogen base composition distingushes each.
The structure of dna and rna dna is a double helix, while rna is a single helix both have sets of nucleotides that contain genetic information. dna is one of the nucleic acids, information-containing molecules in the cell (ribonucleic acid, or rna, is the other nucleic acid) dna is found in the nucleus of every human cell (see the sidebar at the bottom of the page for more about rna and different types of cells) the information in. Dna is composed of subunits that are made of a sugar, a phosphate, and a base the overall structure of a strand of dna resembles that of a twisted ladder, with two side rails and rungs, or steps. The dna molecule carries the genetic code for building organisms contained in its intricate structure is the complex biological information needed to produce the proteins that make up the bodies of all living things.
On the morning of february 28, they determined that the structure of dna was a double-helix polymer, or a spiral of two dna strands, each containing a long chain of monomer nucleotides, wound. In the nucleus of each cell, the dna molecule is packaged into thread-like structures called chromosomes each chromosome is made up of dna tightly coiled many times around proteins called histones that support its structure. The structure of dna provides a mechanism for heredity genes carry biological information that must be copied accurately for transmission to the next generation each time a cell divides to form two daughter cells.
Functions of rna in protein synthesis cells access the information stored in dna by creating rna to direct the synthesis of proteins through the process of translationproteins within a cell have many functions, including building cellular structures and serving as enzyme catalysts for cellular chemical reactions that give cells their specific characteristics. Nucleic acid structure refers to the structure of nucleic acids such as dna and rnachemically speaking, dna and rna are very similar nucleic acid structure is often divided into four different levels: primary, secondary, tertiary and quaternary. Dna, abbreviation of deoxyribonucleic acid, organic chemical of complex molecular structure that is found in all prokaryotic and eukaryotic cells and in many virusesdna codes genetic information for the transmission of inherited traits. Scientist use the term double helix to describe dna's winding, two-stranded chemical structure this shape - which looks much like a twisted ladder - gives dna the power to pass along biological instructions with great precision.