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. Start studying dna structure & function learn vocabulary, terms, and more with flashcards, games, and other study tools. Structure of dna: dna or deoxyribonucleic acid is a helically twisted double chain polydeoxyribonucleotide macromolecule which constitutes the genetic material of all organisms with the exception of rhinoviruses.
A) structures of a-dna and b-dna note the difference in groove width and the relative displacements of the base pairs from the central axis reproduced with permission from arnott [12. Read and learn for free about the following article: dna structure and function if you're seeing this message, it means we're having trouble loading external resources on our website if you're behind a web filter, please make sure that the domains kastaticorg and kasandboxorg are unblocked. This is an attempt to find a good representation for dna structure and solution to the problem representation of dna is given in form of an object oriented data model by using the idea of bar code technology.
Mathematics of dna structure, function and interactions (the ima volumes in mathematics and its applications) sep 22, 2009 by craig john benham and stephen harvey. We argue that, in addition to its coding function, the ability of dna, unlike rna, to adopt a b-dna structure confers advantages both for information accessibility and for packaging the information encoded by dna is both digital - the precise base specifying, for example, amino acid sequences - and analogue. Dna is a two-stranded molecule that appears twisted, giving it a unique shape referred to as the double helix each of the two strands is a long sequence of nucleotides or individual units made. The building block, or monomer, of all nucleic acids is a structure called a nucleotide a nucleotide has three parts: phosphate , deoxyribose sugar , and a nitrogen base there are four different nucleotides that make up a dna molecule, each differing only in the type of nitrogenous base.
Dna replication is the biological process of producing one identical replica of dna from one original dna molecule take this quiz and learn more about it. Concepts in this video can be found in our newer video: music in this video used w/ permission from adrian holovaty (https://ww. Deoxyribonucleic acid (dna) is the genetic material found in all cells chemically, it is classified as a nucleic acid, a relatively simple molecule composed of nucleotides a nucleotide consists.
Dna structure dna definition dna or deoxyribonucleic acid is a complex organic molecule that carries the genetic information of growth, development and reproduction of all living organisms. Dna molecule is a hereditary material which is transmitted from generation to generation it is the largest molecule in the living cell comprising of several millions of nucleotide chain it is in the sequence of nucleotides in the polymers where genetic information carried by chromosomes is located. A dna molecule is made from a series of four base pairs of nucleotides in a long chain that forms a double helix shape the code created by the sequence of base pairs is read by rna which leaves the nucleus and attaches to a cytoplasmic structure called the ribosome.
Dna is the fundamental molecule that contains genetic information about the structure of a living organism dna is divided into large chunks called chromosomes genes are portions of chromosomes that encode genetic information. Review article dna structure and function andrew travers1,2 and georgi muskhelishvili3 1 mrc laboratory of molecular biology, cambridge, uk 2 department of biochemistry, university of cambridge, uk. Topics covered: basic dna structure and replication, parts of a nucleotide, double helix, base-pairing, helicase, dna polymerase etc.
Dna, short for deoxyribonucleic acid, is the molecule that contains the genetic code of organismsthis includes animals, plants, protists, archaea and bacteria dna is in each cell in the organism and tells cells what proteins to make. Dna structure jack0m / getty images both dna and rna are made using bases, a pentose sugar, and phosphate groups, but the nitrogenous bases and the sugar are not the same in the two macromolecules. The key to all of these functions is found in the molecular structure of dna, as described by watson and crick although it may look complicated, the dna in a cell is really just a pattern made up of four different parts called nucleotides. There is indeed a relationship between the structure and function of dna dna contains the genetic code this means it contains the instructions for whatever characteristics an organism has.
Helical model for the structure of dna watson and crick's discovery was also made possible by recent advances in model building, or the assembly of possible three. The alpha-helix and beta-pleated sheet represent the secondary structure of a protein make a drawing to show the secondary structure of your protein model (step d of your worksheet. What is dna - structure and function dna or deoxyribonucleic acid contains all of the hereditary or genetic material in humans and most other organisms so the dna is what lets people know what genetic material is in a person or is in a certain creature or another organism. The three-dimensional structure of dna was elucidated in 1953, earning james watson and francis crick a nobel prize but for years afterward, the structure of rna remained elusive despite efforts by some of the same dna experts to describe it.