give specific examples and function of DNA in our metabolism?
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A very easy example is the generation and regulation of radiant heat by the body. If your ancestors are from cold climates, (mine are from Scotland) your body will usually react better to cold, and you would be more comfortable in lower temps. than a person whose ancestry is from the Equator. Naturally, training and acclimation will blur the results somewhat, but if you look at the members of the Army stationed in the Arctic, most have cold-weather ancestry. This is despite our technology and building practices. DNA controls metabolic rate, and is subject to evolutionary mutation.
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http://en.wikipedia.org/wiki/Oxidative_phosphorylation\n \nthis site should be useful for that
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Transformation\nNucleotides\nBase
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I think you need to be a little more specific.\n\nIncidently we have found many things that may be just as important as what genes you have in terms of what makes organisms similar.\n\nFor instance they have found that there can be variation in the number of gene copies you get (this even varies person to person). \n\nThere are various non-coding regions in DNA that may have functions we don't know about. For instance we know some of them are involved with turning genes on and off.\n\nProteins, the products of genes, are often altered after they have been made.\n\nRNA (chemically related to DNA) may have other functions we are currently unware of. The have found RNA that has been linked to turning genes on and off.\n\nRNA is the messangaer molecule that tells the protein making machinary (ribosomes) how to make a protein. Some RNA has been found that DOESN'T do this. They have found RNA in trees that is used to fight off viruses by binding to foreign virus DNA (this may happen in animals too). \n\nWe are learning lot of new things about RNA and post-translational (changes after proteins are first made) changes.\n\nSo don't judge similarity purely on DNA similarity because similarity is based on similarity genes rather than non-coding regions and the other things I talked about.
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"The liver is an astounding laboratory sustaining metabolism. Among its functions are purification of the blood, removing poisonous ammonia from proteins, detoxifying alcohol and drugs, controlling the body's sugar and cholesterol balance, making bile to digest fats, forming clotting factors for the blood and generating new blood cells. This myriad of functions makes clear why the liver is essential to life."
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me·tab·o·lism (mĭ-tăb'ə-lĭz'əm)\nn.\nThe complex of physical and chemical processes occurring within a living cell or organism that are necessary for the maintenance of life. In metabolism some substances are broken down to yield energy for vital processes while other substances, necessary for life, are synthesized.\nThe functioning of a specific substance, such as water, within the living body.\n\nWALKING
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LIVER\n\nIt plays a major role in metabolism and has a number of functions in the body including glycogen storage, plasma protein synthesis, and drug detoxification. This organ also is the largest gland in the human body. It produces bile, which is important in digestion. It performs and regulates a wide variety of high-volume biochemical reactions requiring specialized tissues.\n\nFAT\n\nFats play a vital role in maintaining healthy skin and hair, insulating body organs against shock, maintaining body temperature, and promoting healthy cell function. They also serve as energy stores for the body. Fats are broken down in the body to release glycerol and free fatty acids. The glycerol can be converted to glucose by the liver and thus used as a source of energy. The fatty acids are a good source of energy for many tissues, especially heart and skeletal muscle.
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metabolism that requires the presence of oxygen
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Well, that is the Holy Grail of biochemistry and we've been dreaming of that ever since Dr. Pauling had me researching metabolic diseases, Lesch-Nyhan syndrome in particular.  The problem has been 1) finding the precise genetic coding of the fouled up part of the DNA and 2) devising a mechanism to clip out that nucleic base and replace it with the correct one (or series of bases).  Precision is, of course, vital or you'll kill the experimental animal (or, ultimately, human patient).
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Anything living has DNA
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Simply DNA is an organic computer program which contains all of the information to grow an organic creature, such as mice, worms and humans.\n\nDNA is all but as individual as you are, so DNA can be used by forensic scientists to narrow down the search for the perp in a murder enquiry.\n\nDNA (if read) can provide much information:\n\napproximate height, hair colour, ethnicity, eye colour, approximate age, etc...
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A nucleic acid that carries the genetic information in the cell and is capable of self-replication and synthesis of RNA. DNA consists 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. The sequence of nucleotides determines individual hereditary characteristics.\n\nETYMOLOGY: \nd(eoxyribo)n(ucleic) a(cid)
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Deoxyribonucleic acid (DNA) is a nucleic acid —usually in the form of a double helix— that contains the genetic instructions specifying the biological development of all cellular forms of life, and most viruses. DNA is a long polymer of nucleotides (a polynucleotide) and encodes the sequence of the amino acid residues in proteins using the genetic code, a triplet code of nucleotides.\n\nIn complex eukaryotic cells such as those from plants, animals, fungi and protists, most of the DNA is located in the cell nucleus. By contrast, in simpler cells called prokaryotes, including the eubacteria and archaea, DNA is not separated from the cytoplasm by a nuclear envelope. The cellular organelles known as chloroplasts and mitochondria also carry DNA.\n\nDNA is often referred to as the molecule of heredity as it is responsible for the genetic propagation of most inherited traits. In humans, these traits can range from hair colour to disease susceptibility. During cell division, DNA is replicated and can be transmitted to offspring during reproduction. Lineage studies can be done based on the facts that the mitochondrial DNA only comes from the mother, and the male Y chromosome only comes from the father.\n\nEvery person's DNA, their genome, is inherited from both parents. The mother's mitochondrial DNA together with twenty-three chromosomes from each parent combine to form the genome of a zygote, the fertilized egg. As a result, with certain exceptions such as red blood cells, most human cells contain 23 pairs of chromosomes, together with mitochondrial DNA inherited from the mother.\n\nContrary to a common misconception, the DNA is not a single molecule, but rather a pair of molecules joined by hydrogen bonds: it is organized as two complementary strands, head-to-toe, with the hydrogen bonds between them.[1] Each strand of DNA is a chain of chemical "building blocks", called nucleotides, of which there are four types: adenine (abbreviated A), cytosine (C), guanine (G) and thymine (T).[1] (Thymine should not be confused with thiamine, which is vitamin B1.) In some organisms, most notably the PBS1 phage, Uracil (U) replaces T in the organism's DNA.[2] These allowable base components of nucleic acids can be polymerized in any order giving the molecules a high degree of uniqueness.\n\nBetween the two strands, each base can only "pair up" with one single predetermined other base: A+T, T+A, C+G and G+C are the only possible combinations; that is, an "A" on one strand of double-stranded DNA will "mate" properly only with a "T" on the other, complementary strand; therefore, naming the bases on the conventionally chosen side of the strand is enough to describe the entire double-strand sequence.[1] Two nucleotides paired together are called a base pair. On rare occasions, wrong pairing can happen, when thymine goes into its enol form or cytosine goes into its imino form. The double-stranded structure of DNA provides a simple mechanism for DNA replication: the DNA double strand is first "unzipped" down the middle, and the "other half" of each new single strand is recreated by exposing each half to a mixture of the four bases. An enzyme makes a new strand by finding the correct base in the mixture and pairing it with the original strand. In this way, the base on the old strand dictates which base will be on the new strand, and the cell ends up with an extra copy of its DNA.\n\nDNA contains the genetic information that is inherited by the offspring of an organism; this information is determined by the sequence of base pairs along its length. A strand of DNA contains genes, areas that regulate genes, and areas that either have no function, or a function yet unknown. Genes can be loosely viewed as the organism's "cookbook" or "blueprint".\n\n\n\nCloning is the process of creating an identical copy of an original. A clone in the biological sen
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A biomolecule is a chemical compound that naturally occurs in living organisms. Biomolecules consist primarily of carbon and hydrogen, along with nitrogen, oxygen, phosphorus and sulfur. Other elements sometimes are incorporated but these are much less common.\n\nBiomolecules are necessary for the existence of all known forms of life. For example, humans possess skin and hair. The main component of hair is keratin, an agglomeration of proteins which are themselves polymers built from amino acids. Amino acids are some of the most important building blocks used, in nature, to construct larger molecules. Another type of building block is the nucleotides, each of which consists of three components: either a purine or pyrimidine base, a pentose sugar and a phosphate group. These nucleotides, mainly, form the nucleic acids.\n\nBesides the polymeric biomolecules, numerous small organic molecules are absorbed or synthesised by living systems. Many biomolecules may be useful or important drugs.
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DNA\nRNA\ncarbohydrate (eg glycogen)\npolypeptides (proteins)\nmucopolysaccharides (proteins joined to carbohydrates)\nlipopolysaccharides (proteins joined to lipids)\nother lipids eg in membranes, and storage fat\n\nThere may be others.
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If you're talking about which species a strand of DNA is a part of, these are recognized by comparing to known types for degrees of similarity.  For instance, we recognize a bit of DNA as being dgog DNA if it bears resemblance to DNA we took from a dog.\n\nOther than that, each bit of DNA is iether coding or non-coding (mostly, it's non-coding--but don't let the term "junk DNA" fool you, because it's very important for structural reasons).  In the coding regions, every three neceotides forms a "codon," and every codon relates to a single amino acid in a peptide chain sequence.  These peptide chains form proteins, which are the builiding blocks for just about every function in the cell body.  Lipids, sugars, and catalytic RNAs do so functions, but other than that, virtually everything is done by proteins.  they cause motility in cells, control transport, sort things, build nucelic acids, lipids, and sugars, create energy from food, detect light and pressure and other stimuli, link cells together, send messages--pretty much everything.  We call DNA the blueprint of the organism because it is the blue print for the proteins which do most of the work in defining and controling the organism.
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http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio%20101/Bio%20101%20Lectures/DNA/dna.htm