the structure of dna answers
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- Report Abuse. Dna is a double helix structure. each molecule is made up of a phosphate molecule, a hexose sugar, and a nucleotide(adenine, guanine, thymine,cytosine). it contains the genetic material of the organism.
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DNA The structure of part of a DNA double helix. Deoxyribonucleic acid (/diˈɒksiˌraɪboʊnjʊˌkliːɪk, -ˌkleɪɪk/; DNA) is a molecule that carries the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses.
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DNA II: The Structure of DNA With the discovery of the structure of DNA, a number of fascinating properties of the molecule were revealed. Not only can the molecule replicate itself, but the information stored in the base sequence of a single DNA strand stores all of the genetic information in your body.
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Understanding the Double Helix Structure of DNA 1 In biology, double helix is a term used to describe the structure of DNA. A DNA double helix consists of two spiral chains of deoxyribonucleic acid. The shape is similar to that of spiral staircase. DNA is a nucleic acid composed of nitrogenous bases (adenine, cytosine, guanine and thymine), a five-carbon sugar (deoxyribose), and phosphate molecules.
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DNA Structure Watson and Crick described the structure of a DNA molecule as a double helix, in which two strands of nucleotide sequences were wound around each other.
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- the shape of a DNA is a ladder that is twisted all the way up. Remember that the DNA strand is microscopic, so you cant see it unless you have a microscope. The shape of DNA (…Deoxyribonucleic acid) is a double helix. DNA has a double helix shape because of the difference in the number of hydrogen bonds between the nitrogen bases..
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DNA: Definition, Structure & Discovery The bases on one strand pair with the bases on another strand: adenine pairs with thymine, and guanine pairs with cytosine. DNA molecules are long — so long, in fact, that they can't fit into cells without the right packaging. To fit inside cells, DNA is coiled tightly to form structures we call chromosomes.NA sequencing is technology that allows researchers to determine the order of bases in a DNA sequence. The technology can be used to determine the order of bases in genes, chromosomes, or an entire genome. In 2000, researchers completed the first full sequence of the human genome.
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Watson: 'DNA was my only gold rush' That secret of life, the language of the gene, was wound up in a double helix. The structure of DNA is two twisted strands of deoxyribose sugars and phosphate groups, held together by the bases adenine (A), cytosine (C), guanine (G), and thymine (T).
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Structure of Nucleic Acids The Helical Structure of DNA shows a single strand of DNA. However, as stated earlier, DNA exists as a double-helix, meaning two strands of DNA bind together. Figure %: Double-helical DNA As seen above, one strand is oriented in the 5' to 3' direction while the complementary strand runs in the 3' to 5' direction.
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DNA Structure The DNA structure consists of two chainlike molecules (polynucleotides) that twist around each other to form the classic double-helix. The cell s machinery forms polynucleotide chains by linking together four nucleotides.
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Understanding the Double Helix Structure of DNA Double Helix. Definition: In biology, double helix is a term used to describe the structure of DNA. A DNA double helix consists of two spiral chains of deoxyribonucleic acid. The shape is similar to that of spiral staircase.
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Structure of the Double Helix Structure of the Double Helix. Double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating groups of sugar (deoxyribose) and phosphate groups.
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The Structure of DNA 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).
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- However, only four bases: A (adenine), C (cytosine), G (guanine), and T (thymine) constitute the backbone of the molecule. The DNA molecule is made up of two polynucleotide strands intertwined together to form a long helical structure, the DNA double helix.
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DNA Structure Nucleotides that form the strands of the DNA structure are complex molecules which consist of both a phosphate moiety and a nucleobase (adenine, guanine, cytosine or thymine) joined to a five-carbon sugar (deoxyribose). In RNA, the five-carbon sugar ribose replaces deoxyribose.he DNA structure consists of two chainlike molecules (polynucleotides) that twist around each other to form the classic double-helix. The cell s machinery forms polynucleotide chains by linking together four nucleotides.
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What is the basic structure of DNA and RNA? Best Answer: DNA is a double helix structure which means two strands of nucleic acid molecules intertwining each other. RNA is a single strand of nucleic acid molecules.n DNA molecule, the sugar is 2′-deoxyribose and in RNA molecule-ribose. The sugars comprise the backbone of every DNA or RNA chain, linked by covalent phosphodiester bond between 5′- and 3′-carbons of two adjacent sugars.
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- The main features of the three-dimensional structure of DNA are: 1  DNA is double-stranded, so there are two polynucleotide stands alongside each other. 2  The two strands are wound round each other to form a double helix. 3  The two strands are joined together by hydrogen bonds between the bases. 4  The base pairs are specific.
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What is the structure of a DNA molecule? A molecule of DNA is double-stranded. The molecule has the shape of a double helix, typically right handed (B form DNA). The DNA molecule consists of two complementary strands oriented in an antiparallel fashion.Each strand is composed of nucleotides.A nucleotide consists of a base (a purine or pyrimidine), a sugar (between the other two components) named deoxyribose, and a phosphate group. Nucleotides are linked to each other via phosphodiester bonds, forming a sugar-phosphate backbone to each strand.he twisted ladder metaphorA DNA molecule is often likened to a spiral (or twisted) ladder. In this analogy, the rungs of the ladder are the base pairs (A-T and G-C). The sides of the ladder are the sugar-phosphate backbones of the two strands.
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The Nature of DNA The arrangement of the components of DNA. A segment of the double helix has been unwound to show the structures more clearly. (a) An accurate chemical diagram showing the sugar-phosphate backbone in blue and the hydrogen bonding of bases in the center
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The Vietnam War (1945â1975) With its combination of rock music and radical hippie politics, drug culture and free love, Woodstock became a symbol of the antiwar movement and an expression of the American youth counterculture of the 1960 s in general.
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DNA Structure and Function DNA Structure and Function. 1  Watson-Crick model of DNA; double helix. 2  The double in the double helix means that DNA is found in a double-stranded form - 2 single-stranded chains of DNA stuck to each other via hydrogen bonding of the base pairs. 3  The 2 single-strands are anti-parallel to each other.
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James Watson, Francis Crick, Maurice Wilkins, and Rosalind Franklin Discovering the Structure of DNA. The molecule that is the basis for heredity, DNA, contains the patterns for constructing proteins in the body, including the various enzymes.
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Why is the DNA structure a double helix? The double helix structure of DNA confers an additional stability to the DNA molecule by virtue of overlapping planes of base pairs. What I mean to say is that due to helical structure of DNA , plane of one base pair is at a certain angle to the base pair just above it and another bp just below it.
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DNA Structure & DNA Replication - Cell Biology The structure, type and functions of a cell are all determined by chromosomes that are found in the nucleus of a cell. These chromosomes are composed of DNA, the acronym for deoxyribonucleic acid. This DNA determines all the characteristics of an organism, and contains all the genetic material that makes us who we are.
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DNA Structure DNA also includes sugars and phosphate groups that make the phosphate-deoxyribose backbone. If you think of the structure of DNA as a twisted ladder, the rungs of the ladder are made from the nitrogenous bases. These bases pair up to make each step of the ladder. They also only pair up in a specific way.
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Nucleic acids contain genetic information and enable synthesis of proteins. Nucleotides are used to make Nucleic Acids. DNA Structure. At left is an unfolded view of a double-stranded DNA molecule, showing the two chains of nucleotides, connected in the center by a series of hydrogen bonds between nitrogenous bases. At right, a schematic illustration showing the arrangement of the two strands in the double-helix configuration.