Deoxy ribonucleic acid (DNA) is a nucleic acid that contains genetic instructions used to grow and develop all the organisms. The main role of the DNA molecule is the long-term storage of genetic information. DNA is often compared to a set of maps, because it contains the instructions needed to make all other components of the cell, such as protein molecules and RNA (Ribonucleic Acid). DNA fragments carrying genetic information are called genes, but other segments in the DNA chain also have construction goals or are involved in regulating the use of this genetic information.
DNA is chemically a long polymer of simple building blocks called nucleotides, whose framework consists of sugars and phosphate groups that are linked by steric bonds.
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The stairs of this ladder are bases and their two bases of phosphate and sugar groups in one form. The joints connected to a DNA chains complement the chains attached to the DNA. If there is an A on chain 1, T will be opposite on chain 2, and if there is a T on chain 1, A will be opposite to chain 2. The same way the pairing between C and G occurs. Two pairs of hydrogen bonding are approximately the same length. As a result, the two double helix chains are spaced apart.
DNA is organized within structures called chromosomes. These chromosomes are doubly replicated prior to cell division in a process called DNA replication. In eukaryotes, like animals, plants and fungi, DNA is located within the cell nucleus, while in prokaryotes, like bacteria, DNA is located within the cell cytoplasm. In chromosomes, chromatin proteins such as "histones" cause the DNA to be condensed and organized. This dense structure guides the interaction between DNA and other proteins and helps for controlling that which DNA sections should be copied.
DNA is soluble in water and invisible While it is insoluble in alcohol, it is deposited in it and can be seen. That's why for extracting DNA and for it to be visible, alcohol; get used. By adding alcohol to the solution, the straightened DNA appears in the DNA test tube.
DNA technology has many applications which some of them are briefly written
Each human being has something called DNA. DNA is described as genetics and an extremely long macromolecule that is the main component of chromosomes and is the material that transfers genetic characteristics in all life forms. DNA constructs of two nucleotide strands coiled around each other in a ladder like arrangement with the sidepieces composed of alternating phosphate and deoxyribose units and the rungs composed of the purine and pyrimidine bases adenine, guanine, cytosine, and thymine. Each chromosome consist of one continuous thread-like molecule of DNA coiled tightly around proteins and contains a portion of the 6,400,000,000 basepairs that make up your DNA.
DNA per medical dictionary is defined as A nucleic acid that carries the genetic information in cells and some viruses, consisting of two long chains of nucleotides twisted into a double helix and joined by hydrogen bonds between the complementary bases adenine and thymine or cytosine and guanine. DNA sequences are
Understanding DNA can take a lot of studying and confusion to even get the general idea of the concept. The structure of DNA is very complicated and complex to understand, but researchers James Watson, Francis Crick, Maurice Wilkins, and Rosalind Franklin all developed the idea of the DNA structure in 1953. Deoxyribonucleic Acid is found in the nucleus of the cell. It is a double stranded molecule that contains the genetic code and is the main component of chromosomes. DNA is the blueprint of organisms. Nucleotides are the basic unit of DNA and they are made up of sugar, phosphate, and one of the four basis including adenine,
DNA, Deoxyribonucleic Acid, is the basic structure for all life, it is the blueprint, the instruction manual, on how to build a living organism. DNA is made up of four nitrogen bases, adenine, thymine, cytosine, and guanine which are connected by sugar-phosphate bonds. Through a process called Protein Synthesis, the nitrogen bases are the code for the creation of amino acids. Essentially, DNA makes amino acids, amino acids make proteins, proteins make organisms. This process has been taking place for much longer than scientists have been able to document. Those scientists are called geneticists and their field is genetics.
DNA is made up of genes, which are small portions of the DNA strand. Genes create cellular protein needed for the body to function. DNA not only creates cellular proteins, but also has the instructions for when and where they will be made. (Racenis 2)
DNA (deoxyribonucleic acid) is a self-replicating nucleic acid that carries the genetic information in cells in a double helix structure. The 2 stranded helix is composed of 4 nucleotides, Adenine (A), Thymine (T), Guanine (G), and Cytosine (C). The base pairs only form between A and T connected by 2 Hydrogen bonds and G and C connected by 3 hydrogen bonds. Foremost DNA wrapping comes about as DNA wraps around protein called histones. These combined loops of DNA and protein are called nucleosomes and the nucleosomes are packaged into a thread called chromatin. Chromosomes are made up of packaged chromatin and can be seen in the nucleus of dividing cells and form around DNA replication. Furthermore, DNA replication begins with 2 DNA strands being separated by the helicase enzyme. Single stranded DNA binding proteins attach to these strands to keep them from re-connecting. 1 DNA strand begins to encode called the leading strand, which Forms from 5’ to 3’ end using DNA polymerase 3 the primary polymerase. The other strand is referred to as the lagging strand, which presents problems because it has to form from the 5’ to 3’end as well. As continuous replication of the leading strand continues the lagging strand forms in pieces called Okazaki fragments. RNA primase forms as RNA primer and polymerase III lay down new DNA. This process repeats again and again. DNA polymerase I replaces RNA primers with DNA and DNA ligase links the Okazaki fragments. Along with the process of DNA
Every human being in the world is different, except for identical twins. Everyone is made up of different DNA that is passed on from the mother and father to the individual. It’s what makes the world unique and diverse. DNA, also known as deoxyribonucleic acid, is a long molecule that contains our unique genetic code (Genome Campus, 2016). DNA is found in the nucleus of a cell. It’s made up of a nucleotide strand that contains a phosphate molecule, ribose sugar, and a nitrogenous base. There are four different nitrogenous bases called Adenine, Guanine, Thymine, and Cytosine. The phosphate molecule and the ribose sugar join to act like a backbone (Kerns, 2017). The four different bases connect to this and act like the steps on a ladder. When these three parts of DNA bond together, hydrogen bonds are formed. The four bases are separated into two different categories. Adenine and Guanine are purines and can only bond together, and Thymine and Cytosine are Pyrimidines and can only bond together. This is
Deoxyribonucleic (DNA) is the molecule that hold the genetic information of living things. In our body every cell contains about 2 meters of DNA. DNA is copied every time a cell divides. Deoxyribonucleic (DNA) is made up of two polynucleotide strands. Polynucleotide strands twist around each other, forming a shape that looks like a ladder called a double helix. The two polynucleotide strands run antiaparallel to each other with nitrogenous bases this means that the stands run in opposite directions, parallel to one another. The DNA molecule consists of two backbones chains of sugars and phosphate groups. The organic bases held together by hydrogen bonds. Although bases bonded together are termed paired
Chromosome- Chromosomes are the microscopic structure within cells that carries the molecule deoxyribonucleic acid. DNA is the hereditary material that influences the development and characteristics of each organism. In bacteria and bacteria-like organisms called archaebacteria, chromosomes are simple circles of DNA that float around in the cell. In more complex cells, or Eukaryotes, chromosomes are stored within a well developed and defined nucleus. In eukaryotic cells, chromosomes are highly complex structures in which the shape of the DNA molecules is linear, rather than circular. Chromosomes consist chiefly of proteins and DNA. Tiny chemical subunits called nucleotide bases form the structure of DNA. A sequence of these bases that are along a DNA strand will create a code for the production of a special protein also known as a gene. Genes occupy precise locations on the chromosome. Each cell contains enough DNA to form a thread extending about 2 m (about 7 ft). Proteins called histones play a key role in packaging DNA within chromosomes. Sections of
DNA is a long curved structure, made up of pairs of four specific bases: adenine, guanine, cytosine, and thymine, is the repository of a code from which all of our cells are made. The code is made up of base pairs which look like the
Structure and function in Biology is a broad concept that can be explored within a diverse range of topics across the subject matter. The following essay will be focussed mainly on the subject of Deoxyribonucleic Acid, or more commonly DNA. DNA is a highly complex, intricate and extraordinary macromolecule found within all living cells. DNA is a "biochemical noun" and can be defined as "...a self-replicating material which is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information." [Oxford Dictionary, c2016] DNA is found in the nucleus of eukaryotic cells, enclosed within a double membrane. Eukaryotic cells are multifaceted and require a high level of regulation to ensure smooth functioning. The double membrane of the nucleus allows gene expression, a key function of DNA, to be efficiently regulated.
Deoxyribonucleic acid (DNA) accommodates a variety of purposes, including data storage and replication, in the human cell and in the cells of many other organisms. DNA in a human cell is primarily responsible for storing genetic information that is utilized to control virtually every aspect of cellular expression. This genetic information is passed down from parents to progeny, resulting in progeny with some genetic traits of each parent. DNA is withal replicated whenever the cell divides; this ascertains that each cell in the body has and expresses the same genetic information. It is additionally the first element in the synthesis of proteins, which are responsible for most cellular activity.
DNA per medical dictionary is defined as A nucleic acid that carries the genetic information in cells and some viruses, consisting of two long chains of nucleotides twisted into a double helix and joined by hydrogen bonds between the
wonder what exactly is DNA? DNA is a term used for deoxyribonucleic acid and it
All living organisms, from amoebas to humans, have a molecular code called DNA in their cells, which instruct the activities that keep the organism alive. DNA is made up of long, twisted strands of four molecular “letters” (A, T, G, and C), which pair up according to their complementary base pairs, and their order determines how proteins — the vital molecules that perform all the major tasks in our cells — are made. (Refer to Diagram 1 to help sum up the concept.)